Fall back to default behavior when deployed to a worker node (#593)

* Add test demonstrating failure when running on worker node

* Consider manager status when checking for swarm related features

* Update documentation

.github/FUNDING.yml

@@ -1,3 +0,0 @@
-github: offen
-patreon: offen
-

.github/workflows/deploy-docs.yml

@@ -39,7 +39,7 @@ jobs:
         env:
           JEKYLL_ENV: production
       - name: Upload artifact
-        uses: actions/upload-pages-artifact@v1
+        uses: actions/upload-pages-artifact@v3
         with:
           path: 'docs/_site/'
 
@@ -52,4 +52,4 @@ jobs:
     steps:
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v1
+        uses: actions/deploy-pages@v4

.github/workflows/golangci-lint.yml

@@ -18,7 +18,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-go@v5
         with:
-          go-version: '1.22'
+          go-version: '1.24'
           cache: false
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v3
@@ -26,7 +26,7 @@ jobs:
           # Require: The version of golangci-lint to use.
           # When `install-mode` is `binary` (default) the value can be v1.2 or v1.2.3 or `latest` to use the latest version.
           # When `install-mode` is `goinstall` the value can be v1.2.3, `latest`, or the hash of a commit.
-          version: v1.57
+          version: v1.64
 
           # Optional: working directory, useful for monorepos
           # working-directory: somedir

.github/workflows/unit.yml

@@ -14,7 +14,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v4
         with:
-          go-version: '1.22.x'
+          go-version: '1.24.x'
       - name: Install dependencies
         run: go mod download
       - name: Test with the Go CLI

.golangci.yml

@@ -5,4 +5,5 @@ linters:
     - staticcheck
     - govet
 output:
-  format: github-actions
+  formats:
+    - format: colored-line-number

Dockerfile

@@ -1,7 +1,7 @@
 # Copyright 2022 - offen.software <hioffen@posteo.de>
 # SPDX-License-Identifier: MPL-2.0
 
-FROM golang:1.22-alpine as builder
+FROM golang:1.24-alpine AS builder
 
 WORKDIR /app
 COPY . .
@@ -9,7 +9,7 @@ RUN go mod download
 WORKDIR /app/cmd/backup
 RUN go build -o backup .
 
-FROM alpine:3.20
+FROM alpine:3.22
 
 WORKDIR /root
 

README.md

@@ -24,8 +24,6 @@ Documentation is found at <https://offen.github.io/docker-volume-backup>
 Add a `backup` service to your compose setup and mount the volumes you would like to see backed up:
 
 ```yml
-version: '3'
-
 services:
   volume-consumer:
     build:
@@ -76,7 +74,11 @@ docker run --rm \
   offen/docker-volume-backup:v2
 ```
 
-Alternatively, pass a `--env-file` in order to use a full config as described below.
+Alternatively, pass a `--env-file` in order to use a full config as described [in the docs](https://offen.github.io/docker-volume-backup/reference/).
+
+### Looking for help?
+
+In case your are looking for help or guidance on how to incorporate docker-volume-backup into your existing setup, consider [becoming a sponsor](https://github.com/sponsors/offen?frequency=one-time) and book a one hour consulting session.
 
 ---
 

cmd/backup/archive.go

@@ -93,6 +93,8 @@ func compress(paths []string, outFilePath, algo string, concurrency int) error {
 
 func getCompressionWriter(file *os.File, algo string, concurrency int) (io.WriteCloser, error) {
 	switch algo {
+	case "none":
+		return &passThroughWriteCloser{file}, nil
 	case "gz":
 		w, err := pgzip.NewWriterLevel(file, 5)
 		if err != nil {
@@ -165,3 +167,15 @@ func writeTarball(path string, tarWriter *tar.Writer, prefix string) error {
 
 	return nil
 }
+
+type passThroughWriteCloser struct {
+	target io.WriteCloser
+}
+
+func (p *passThroughWriteCloser) Write(b []byte) (int, error) {
+	return p.target.Write(b)
+}
+
+func (p *passThroughWriteCloser) Close() error {
+	return nil
+}

cmd/backup/config.go

@@ -47,6 +47,9 @@ type Config struct {
 	BackupExcludeRegexp           RegexpDecoder   `split_words:"true"`
 	BackupSkipBackendsFromPrune   []string        `split_words:"true"`
 	GpgPassphrase                 string          `split_words:"true"`
+	GpgPublicKeyRing              string          `split_words:"true"`
+	AgePassphrase                 string          `split_words:"true"`
+	AgePublicKeys                 []string        `split_words:"true"`
 	NotificationURLs              []string        `envconfig:"NOTIFICATION_URLS"`
 	NotificationLevel             string          `split_words:"true" default:"error"`
 	EmailNotificationRecipient    string          `split_words:"true"`
@@ -92,7 +95,7 @@ type CompressionType string
 
 func (c *CompressionType) Decode(v string) error {
 	switch v {
-	case "gz", "zst":
+	case "none", "gz", "zst":
 		*c = CompressionType(v)
 		return nil
 	default:

cmd/backup/encrypt_archive.go

@@ -4,62 +4,223 @@
 package main
 
 import (
+	"bytes"
+	"errors"
 	"fmt"
 	"io"
 	"os"
 	"path"
+	"strings"
 
+	"filippo.io/age"
+	"filippo.io/age/agessh"
+	"github.com/ProtonMail/go-crypto/openpgp/armor"
 	openpgp "github.com/ProtonMail/go-crypto/openpgp/v2"
 	"github.com/offen/docker-volume-backup/internal/errwrap"
 )
 
-// encryptArchive encrypts the backup file using PGP and the configured passphrase.
-// In case no passphrase is given it returns early, leaving the backup file
+func countTrue(b ...bool) int {
+	c := int(0)
+	for _, v := range b {
+		if v {
+			c++
+		}
+	}
+	return c
+}
+
+// encryptArchive encrypts the backup file using PGP and the configured passphrase or publickey(s).
+// In case no passphrase or publickey is given it returns early, leaving the backup file
 // untouched.
 func (s *script) encryptArchive() error {
-	if s.c.GpgPassphrase == "" {
+	useGPGSymmetric := s.c.GpgPassphrase != ""
+	useGPGAsymmetric := s.c.GpgPublicKeyRing != ""
+	useAgeSymmetric := s.c.AgePassphrase != ""
+	useAgeAsymmetric := len(s.c.AgePublicKeys) > 0
+	switch nconfigured := countTrue(
+		useGPGSymmetric,
+		useGPGAsymmetric,
+		useAgeSymmetric,
+		useAgeAsymmetric,
+	); nconfigured {
+	case 0:
 		return nil
+	case 1:
+		// ok!
+	default:
+		return fmt.Errorf(
+			"error in selecting archive encryption method: expected 0 or 1 to be configured, %d methods are configured",
+			nconfigured,
+		)
 	}
 
-	gpgFile := fmt.Sprintf("%s.gpg", s.file)
+	if useGPGSymmetric {
+		return s.encryptWithGPGSymmetric()
+	} else if useGPGAsymmetric {
+		return s.encryptWithGPGAsymmetric()
+	} else if useAgeSymmetric || useAgeAsymmetric {
+		ar, err := s.getConfiguredAgeRecipients()
+		if err != nil {
+			return errwrap.Wrap(err, "failed to get configured age recipients")
+		}
+		return s.encryptWithAge(ar)
+	}
+	return nil
+}
+
+func (s *script) getConfiguredAgeRecipients() ([]age.Recipient, error) {
+	if s.c.AgePassphrase == "" && len(s.c.AgePublicKeys) == 0 {
+		return nil, fmt.Errorf("no age recipients configured")
+	}
+	recipients := []age.Recipient{}
+	if len(s.c.AgePublicKeys) > 0 {
+		for _, pk := range s.c.AgePublicKeys {
+			pkr, err := parseAgeRecipient(pk)
+			if err != nil {
+				return nil, errwrap.Wrap(err, "failed to parse age public key")
+			}
+			recipients = append(recipients, pkr)
+		}
+	}
+	if s.c.AgePassphrase != "" {
+		if len(recipients) != 0 {
+			return nil, fmt.Errorf("age encryption must only be enabled via passphrase or public key, not both")
+		}
+
+		r, err := age.NewScryptRecipient(s.c.AgePassphrase)
+		if err != nil {
+			return nil, errwrap.Wrap(err, "failed to create scrypt identity from age passphrase")
+		}
+		recipients = append(recipients, r)
+	}
+	return recipients, nil
+}
+
+func parseAgeRecipient(arg string) (age.Recipient, error) {
+	// This logic is adapted from what the age CLI is doing
+	// stripping some special cases
+	switch {
+	case strings.HasPrefix(arg, "age1"):
+		return age.ParseX25519Recipient(arg)
+	case strings.HasPrefix(arg, "ssh-"):
+		return agessh.ParseRecipient(arg)
+	}
+	return nil, fmt.Errorf("unknown recipient type: %q", arg)
+}
+
+func (s *script) encryptWithAge(rec []age.Recipient) error {
+	return s.doEncrypt("age", func(ciphertextWriter io.Writer) (io.WriteCloser, error) {
+		return age.Encrypt(ciphertextWriter, rec...)
+	})
+}
+
+func (s *script) encryptWithGPGSymmetric() error {
+	return s.doEncrypt("gpg", func(ciphertextWriter io.Writer) (io.WriteCloser, error) {
+		_, name := path.Split(s.file)
+		return openpgp.SymmetricallyEncrypt(ciphertextWriter, []byte(s.c.GpgPassphrase), &openpgp.FileHints{
+			FileName: name,
+		}, nil)
+	})
+}
+
+type closeAllWriter struct {
+	io.Writer
+	closers []io.Closer
+}
+
+func (c *closeAllWriter) Close() (err error) {
+	for _, cl := range c.closers {
+		err = errors.Join(err, cl.Close())
+	}
+	return
+}
+
+var _ io.WriteCloser = (*closeAllWriter)(nil)
+
+func (s *script) encryptWithGPGAsymmetric() error {
+	return s.doEncrypt("gpg", func(ciphertextWriter io.Writer) (_ io.WriteCloser, outerr error) {
+		entityList, err := openpgp.ReadArmoredKeyRing(bytes.NewReader([]byte(s.c.GpgPublicKeyRing)))
+		if err != nil {
+			return nil, errwrap.Wrap(err, "error parsing armored keyring")
+		}
+
+		armoredWriter, err := armor.Encode(ciphertextWriter, "PGP MESSAGE", nil)
+		if err != nil {
+			return nil, errwrap.Wrap(err, "error preparing encryption")
+		}
+		defer func() {
+			if outerr != nil {
+				_ = armoredWriter.Close()
+			}
+		}()
+
+		_, name := path.Split(s.file)
+		encWriter, err := openpgp.Encrypt(armoredWriter, entityList, nil, nil, &openpgp.FileHints{
+			FileName: name,
+		}, nil)
+		if err != nil {
+			return nil, err
+		}
+		return &closeAllWriter{
+			Writer:  encWriter,
+			closers: []io.Closer{encWriter, armoredWriter},
+		}, nil
+	})
+}
+
+func (s *script) doEncrypt(
+	extension string,
+	encryptor func(ciphertextWriter io.Writer) (io.WriteCloser, error),
+) (outerr error) {
+	encFile := fmt.Sprintf("%s.%s", s.file, extension)
 	s.registerHook(hookLevelPlumbing, func(error) error {
-		if err := remove(gpgFile); err != nil {
-			return errwrap.Wrap(err, "error removing gpg file")
+		if err := remove(encFile); err != nil {
+			return errwrap.Wrap(err, "error removing encrypted file")
 		}
 		s.logger.Info(
-			fmt.Sprintf("Removed GPG file `%s`.", gpgFile),
+			fmt.Sprintf("Removed encrypted file `%s`.", encFile),
 		)
 		return nil
 	})
 
-	outFile, err := os.Create(gpgFile)
+	outFile, err := os.Create(encFile)
 	if err != nil {
 		return errwrap.Wrap(err, "error opening out file")
 	}
-	defer outFile.Close()
+	defer func() {
+		if err := outFile.Close(); err != nil {
+			outerr = errors.Join(outerr, errwrap.Wrap(err, "error closing out file"))
+		}
+	}()
 
-	_, name := path.Split(s.file)
-	dst, err := openpgp.SymmetricallyEncrypt(outFile, []byte(s.c.GpgPassphrase), &openpgp.FileHints{
-		FileName: name,
-	}, nil)
+	dst, err := encryptor(outFile)
 	if err != nil {
 		return errwrap.Wrap(err, "error encrypting backup file")
 	}
-	defer dst.Close()
+	defer func() {
+		if err := dst.Close(); err != nil {
+			outerr = errors.Join(outerr, errwrap.Wrap(err, "error closing encrypted backup file"))
+		}
+	}()
 
 	src, err := os.Open(s.file)
 	if err != nil {
-		return errwrap.Wrap(err, fmt.Sprintf("error opening backup file `%s`", s.file))
+		return errwrap.Wrap(err, fmt.Sprintf("error opening backup file %q", s.file))
 	}
-	defer src.Close()
+	defer func() {
+		if err := src.Close(); err != nil {
+			outerr = errors.Join(outerr, errwrap.Wrap(err, "error closing backup file"))
+		}
+	}()
 
 	if _, err := io.Copy(dst, src); err != nil {
 		return errwrap.Wrap(err, "error writing ciphertext to file")
 	}
 
-	s.file = gpgFile
+	s.file = encFile
 	s.logger.Info(
-		fmt.Sprintf("Encrypted backup using given passphrase, saving as `%s`.", s.file),
+		fmt.Sprintf("Encrypted backup using %q, saving as %q", extension, s.file),
 	)
-	return nil
+
+	return
 }

cmd/backup/exec.go

@@ -24,10 +24,18 @@ import (
 )
 
 func (s *script) exec(containerRef string, command string, user string) ([]byte, []byte, error) {
-	args, _ := argv.Argv(command, nil, nil)
+	args, err := argv.Argv(command, nil, nil)
+	if err != nil {
+		return nil, nil, errwrap.Wrap(err, fmt.Sprintf("error parsing argv from '%s'", command))
+	}
+	if len(args) == 0 {
+		return nil, nil, errwrap.Wrap(nil, "received unexpected empty command")
+	}
+
 	commandEnv := []string{
 		fmt.Sprintf("COMMAND_RUNTIME_ARCHIVE_FILEPATH=%s", s.file),
 	}
+
 	execID, err := s.cli.ContainerExecCreate(context.Background(), containerRef, container.ExecOptions{
 		Cmd:          args[0],
 		AttachStdin:  true,

cmd/backup/script.go

@@ -86,7 +86,12 @@ func (s *script) init() error {
 
 	var bf bytes.Buffer
 	if tErr := tmplFileName.Execute(&bf, map[string]string{
-		"Extension": fmt.Sprintf("tar.%s", s.c.BackupCompression),
+		"Extension": func() string {
+			if s.c.BackupCompression == "none" {
+				return "tar"
+			}
+			return fmt.Sprintf("tar.%s", s.c.BackupCompression)
+		}(),
 	}); tErr != nil {
 		return errwrap.Wrap(tErr, "error executing backup file extension template")
 	}

cmd/backup/stop_restart.go

@@ -13,7 +13,6 @@ import (
 	"time"
 
 	"github.com/docker/cli/cli/command/service/progress"
-	"github.com/docker/docker/api/types"
 	"github.com/docker/docker/api/types/container"
 	ctr "github.com/docker/docker/api/types/container"
 	"github.com/docker/docker/api/types/filters"
@@ -24,7 +23,7 @@ import (
 )
 
 func scaleService(cli *client.Client, serviceID string, replicas uint64) ([]string, error) {
-	service, _, err := cli.ServiceInspectWithRaw(context.Background(), serviceID, types.ServiceInspectOptions{})
+	service, _, err := cli.ServiceInspectWithRaw(context.Background(), serviceID, swarm.ServiceInspectOptions{})
 	if err != nil {
 		return nil, errwrap.Wrap(err, fmt.Sprintf("error inspecting service %s", serviceID))
 	}
@@ -36,7 +35,7 @@ func scaleService(cli *client.Client, serviceID string, replicas uint64) ([]stri
 		return nil, errwrap.Wrap(nil, fmt.Sprintf("service to be scaled %s has to be in replicated mode", service.Spec.Name))
 	}
 
-	response, err := cli.ServiceUpdate(context.Background(), service.ID, service.Version, service.Spec, types.ServiceUpdateOptions{})
+	response, err := cli.ServiceUpdate(context.Background(), service.ID, service.Version, service.Spec, swarm.ServiceUpdateOptions{})
 	if err != nil {
 		return nil, errwrap.Wrap(err, "error updating service")
 	}
@@ -90,7 +89,7 @@ func isSwarm(c interface {
 	if err != nil {
 		return false, errwrap.Wrap(err, "error getting docker info")
 	}
-	return info.Swarm.LocalNodeState != "" && info.Swarm.LocalNodeState != swarm.LocalNodeStateInactive, nil
+	return info.Swarm.LocalNodeState != "" && info.Swarm.LocalNodeState != swarm.LocalNodeStateInactive && info.Swarm.ControlAvailable, nil
 }
 
 // stopContainersAndServices stops all Docker containers that are marked as to being
@@ -142,11 +141,11 @@ func (s *script) stopContainersAndServices() (func() error, error) {
 	var allServices []swarm.Service
 	var servicesToScaleDown []handledSwarmService
 	if isDockerSwarm {
-		allServices, err = s.cli.ServiceList(context.Background(), types.ServiceListOptions{})
+		allServices, err = s.cli.ServiceList(context.Background(), swarm.ServiceListOptions{})
 		if err != nil {
 			return noop, errwrap.Wrap(err, "error querying for services")
 		}
-		matchingServices, err := s.cli.ServiceList(context.Background(), types.ServiceListOptions{
+		matchingServices, err := s.cli.ServiceList(context.Background(), swarm.ServiceListOptions{
 			Filters: filters.NewArgs(filters.KeyValuePair{
 				Key:   "label",
 				Value: filterMatchLabel,
@@ -177,7 +176,7 @@ func (s *script) stopContainersAndServices() (func() error, error) {
 	if isDockerSwarm {
 		for _, container := range containersToStop {
 			if swarmServiceID, ok := container.Labels["com.docker.swarm.service.id"]; ok {
-				parentService, _, err := s.cli.ServiceInspectWithRaw(context.Background(), swarmServiceID, types.ServiceInspectOptions{})
+				parentService, _, err := s.cli.ServiceInspectWithRaw(context.Background(), swarmServiceID, swarm.ServiceInspectOptions{})
 				if err != nil {
 					return noop, errwrap.Wrap(err, fmt.Sprintf("error querying for parent service with ID %s", swarmServiceID))
 				}
@@ -216,7 +215,7 @@ func (s *script) stopContainersAndServices() (func() error, error) {
 		)
 	}
 
-	var stoppedContainers []types.Container
+	var stoppedContainers []container.Summary
 	var stopErrors []error
 	for _, container := range containersToStop {
 		if err := s.cli.ContainerStop(context.Background(), container.ID, ctr.StopOptions{}); err != nil {
@@ -293,7 +292,7 @@ func (s *script) stopContainersAndServices() (func() error, error) {
 				// in case a container was part of a swarm service, the service requires to
 				// be force updated instead of restarting the container as it would otherwise
 				// remain in a "completed" state
-				service, _, err := s.cli.ServiceInspectWithRaw(context.Background(), swarmServiceID, types.ServiceInspectOptions{})
+				service, _, err := s.cli.ServiceInspectWithRaw(context.Background(), swarmServiceID, swarm.ServiceInspectOptions{})
 				if err != nil {
 					restartErrors = append(
 						restartErrors,
@@ -304,7 +303,7 @@ func (s *script) stopContainersAndServices() (func() error, error) {
 				service.Spec.TaskTemplate.ForceUpdate += 1
 				if _, err := s.cli.ServiceUpdate(
 					context.Background(), service.ID,
-					service.Version, service.Spec, types.ServiceUpdateOptions{},
+					service.Version, service.Spec, swarm.ServiceUpdateOptions{},
 				); err != nil {
 					restartErrors = append(restartErrors, err)
 				}

cmd/backup/stop_restart_test.go

@@ -30,13 +30,26 @@ func TestIsSwarm(t *testing.T) {
 			&mockInfoClient{
 				result: system.Info{
 					Swarm: swarm.Info{
-						LocalNodeState: swarm.LocalNodeStateActive,
+						LocalNodeState:   swarm.LocalNodeStateActive,
+						ControlAvailable: true,
 					},
 				},
 			},
 			true,
 			false,
 		},
+		{
+			"worker",
+			&mockInfoClient{
+				result: system.Info{
+					Swarm: swarm.Info{
+						LocalNodeState: swarm.LocalNodeStateActive,
+					},
+				},
+			},
+			false,
+			false,
+		},
 		{
 			"compose",
 			&mockInfoClient{

docs/Gemfile.lock

@@ -59,13 +59,11 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rexml (3.3.3)
-      strscan
+    rexml (3.3.9)
     rouge (3.30.0)
     safe_yaml (1.0.5)
     sassc (2.4.0)
       ffi (~> 1.9)
-    strscan (3.1.0)
     terminal-table (3.0.2)
       unicode-display_width (>= 1.1.1, < 3)
     unicode-display_width (2.4.2)

docs/how-tos/automatically-prune-old-backups.md

@@ -14,8 +14,6 @@ Be aware that this mechanism looks at __all files in the target bucket or archiv
 In case you need to use a target that cannot be used exclusively for your backups, you can configure `BACKUP_PRUNING_PREFIX` to limit which files are considered eligible for deletion:
 
 ```yml
-version: '3'
-
 services:
   # ... define other services using the `data` volume here
   backup:

docs/how-tos/encrypt-backups-using-gpg.md

@@ -3,15 +3,7 @@ title: Encrypt backups using GPG
 layout: default
 parent: How Tos
 nav_order: 7
+nav_exclude: true
 ---
 
-# Encrypt backups using GPG
-
-The image supports encrypting backups using GPG out of the box.
-In case a `GPG_PASSPHRASE` environment variable is set, the backup archive will be encrypted using the given key and saved as a `.gpg` file instead.
-
-Assuming you have `gpg` installed, you can decrypt such a backup using (your OS will prompt for the passphrase before decryption can happen):
-
-```console
-gpg -o backup.tar.gz -d backup.tar.gz.gpg
-```
+See: [Encrypt Backups](encrypt-backups)

docs/how-tos/encrypt-backups.md

@@ -0,0 +1,30 @@
+---
+title: Encrypting backups
+layout: default
+parent: How Tos
+nav_order: 7
+---
+
+# Encrypting backups
+
+The image supports encrypting backups using one of two available methods: **GPG** or **[age](https://age-encryption.org/)**
+
+## Using GPG encryption
+
+In case a `GPG_PASSPHRASE` or `GPG_PUBLIC_KEY_RING` environment variable is set, the backup archive will be encrypted using the given key and saved as a `.gpg` file instead.
+
+Assuming you have `gpg` installed, you can decrypt such a backup using (your OS will prompt for the passphrase before decryption can happen):
+
+```console
+gpg -o backup.tar.gz -d backup.tar.gz.gpg
+```
+
+## Using age encryption
+
+age allows backups to be encrypted with either a symmetric key (password) or a public key. One of those options are available for use.
+
+Given `AGE_PASSPHRASE` being provided, the backup archive will be encrypted with the passphrase and saved as a `.age` file instead. Refer to age documentation for how to properly decrypt.
+
+Given `AGE_PUBLIC_KEYS` being provided (allowing multiple by separating each public key with `,`), the backup archive will be encrypted with the provided public keys. It will also result in the archive being saved as a `.age` file.
+
+You can use SSH keys in addition to `age` keys for encryption; `AGE_PUBLIC_KEYS` accepts both.

docs/how-tos/handle-file-uploads-using-third-party-tools.md

@@ -20,8 +20,6 @@ RUN apk add rsync
 Using this image, you can now omit configuring any of the supported storage backends, and instead define your own mechanism in a `docker-volume-backup.copy-post` label:
 
 ```yml
-version: '3'
-
 services:
   backup:
     image: your-custom-image
@@ -33,7 +31,7 @@ services:
       - docker-volume-backup.copy-post=/bin/sh -c 'rsync $$COMMAND_RUNTIME_ARCHIVE_FILEPATH /destination'
     volumes:
       - app_data:/backup/app_data:ro
-      - /var/run/docker.sock:/var/run/docker.sock
+      - /var/run/docker.sock:/var/run/docker.sock:ro
 
   # other services defined here ...
 volumes:

docs/how-tos/replace-deprecated-backup-from-snapshot.md

@@ -11,8 +11,6 @@ Starting with version 2.15.0, the `BACKUP_FROM_SNAPSHOT` feature has been deprec
 If you need to prepare your sources before the backup is taken, use `archive-pre`, `archive-post` and an intermediate volume:
 
 ```yml
-version: '3'
-
 services:
   my_app:
     build: .

docs/how-tos/run-custom-commands.md

@@ -28,8 +28,6 @@ the `docker-volume-backup` container as shown in the Quickstart example.
 Taking a database dump using `mysqldump` would look like this:
 
 ```yml
-version: '3'
-
 services:
   # ... define other services using the `data` volume here
   database:
@@ -56,8 +54,6 @@ In case you use `EXEC_LABEL` together with configuration mounted from `conf.d` i
 Else, schedules that do not specify an `EXEC_LABEL` will still trigger commands on all containers with such labels, no matter whether they specify `docker-volume-backup.exec-label` or not.
 
 ```yml
-version: '3'
-
 services:
   database:
     image: mariadb
@@ -87,8 +83,6 @@ By default the backup command is executed by the user provided by the container'
 It is possible to specify a custom user that is used to run commands in dedicated labels with the format `docker-volume-backup.[step]-[pre|post].user`:
 
 ```yml
-version: '3'
-
 services:
   gitea:
     image: gitea/gitea

docs/how-tos/run-multiple-schedules.md

@@ -10,8 +10,6 @@ nav_order: 11
 Multiple backup schedules with different configuration can be configured by mounting an arbitrary number of configuration files (using the `.env` format) into `/etc/dockervolumebackup/conf.d`:
 
 ```yml
-version: '3'
-
 services:
   # ... define other services using the `data` volume here
   backup:

docs/how-tos/set-container-timezone.md

@@ -12,8 +12,6 @@ As the image is designed to be as small as possible, additional timezone data is
 In case you want to run your cron rules in your local timezone (respecting DST and similar), you can mount your Docker host's `/etc/timezone` and `/etc/localtime` in read-only mode:
 
 ```yml
-version: '3'
-
 services:
   backup:
     image: offen/docker-volume-backup:v2

docs/how-tos/set-up-dropbox.md

@@ -33,5 +33,7 @@ Note: Using the "Generated access token" in the app console is not supported, as
 
 ## Other parameters
 
-Important: If you chose `App folder` access during the creation of your Dropbox app in step 1 above, you can only write in the app's directory!
-This means, that `DROPBOX_REMOTE_PATH` must start with e.g. `/Apps/YOUR_APP_NAME` or `/Apps/YOUR_APP_NAME/some_sub_dir`
+Important: If you chose `App folder` access during the creation of your Dropbox app in step 1 above, `DROPBOX_REMOTE_PATH` will be a relative path under the App folder!
+(_For example, DROPBOX_REMOTE_PATH=/somedir means the backup file will be uploaded to /Apps/myapp/somedir_)
+On the other hand if you chose `Full Dropbox` access, the value for `DROPBOX_REMOTE_PATH` will represent an absolute path inside your Dropbox storage area.
+(_Still considering the same example above, the backup file will be uploaded to /somedir in your Dropbox root_)

docs/how-tos/set-up-notifications.md

@@ -12,8 +12,6 @@ parent: How Tos
 To send out email notifications on failed backup runs, provide SMTP credentials, a sender and a recipient:
 
 ```yml
-version: '3'
-
 services:
   backup:
     image: offen/docker-volume-backup:v2

docs/how-tos/stop-containers-during-backup.md

@@ -17,8 +17,6 @@ By default, any container that is labeled `docker-volume-backup.stop-during-back
 In case you need more fine grained control about which containers should be stopped (e.g. when backing up multiple volumes on different schedules), you can set the `BACKUP_STOP_DURING_BACKUP_LABEL` environment variable and then use the same value for labeling:
 
 ```yml
-version: '3'
-
 services:
   app:
     # definition for app ...

docs/how-tos/use-with-docker-swarm.md

@@ -8,7 +8,8 @@ nav_order: 13
 # Use with Docker Swarm
 
 {: .note }
-The mechanisms described in this page __do only apply when Docker is running in [Swarm mode][swarm]__.
+The mechanisms described in this page __do only apply when Docker is running in [Swarm mode][swarm]__ and __when placing the `docker-volume-backup` container on a manager node__.
+Containers that are placed on worker nodes function as if the Docker engine is not running in Swarm mode, i.e. there is no access to services and there is no way to interact with resources that are running on different host nodes.
 
 [swarm]: https://docs.docker.com/engine/swarm/
 

docs/index.md

@@ -32,8 +32,6 @@ Code and documentation for `v1` versions are found on [this branch][v1-branch].
 Add a `backup` service to your compose setup and mount the volumes you would like to see backed up:
 
 ```yml
-version: '3'
-
 services:
   volume-consumer:
     build:

docs/recipes/index.md

@@ -15,8 +15,6 @@ This doc lists configuration for some real-world use cases that you can copy and
 ## Backing up to AWS S3
 
 ```yml
-version: '3'
-
 services:
   # ... define other services using the `data` volume here
   backup:
@@ -36,8 +34,6 @@ volumes:
 ## Backing up to Filebase
 
 ```yml
-version: '3'
-
 services:
   # ... define other services using the `data` volume here
   backup:
@@ -58,8 +54,6 @@ volumes:
 ## Backing up to MinIO
 
 ```yml
-version: '3'
-
 services:
   # ... define other services using the `data` volume here
   backup:
@@ -81,8 +75,6 @@ volumes:
 ## Backing up to MinIO (using Docker secrets)
 
 ```yml
-version: '3'
-
 services:
   # ... define other services using the `data` volume here
   backup:
@@ -112,8 +104,6 @@ secrets:
 ## Backing up to WebDAV
 
 ```yml
-version: '3'
-
 services:
   # ... define other services using the `data` volume here
   backup:
@@ -134,8 +124,6 @@ volumes:
 ## Backing up to SSH
 
 ```yml
-version: '3'
-
 services:
   # ... define other services using the `data` volume here
   backup:
@@ -157,8 +145,6 @@ volumes:
 ## Backing up to Azure Blob Storage
 
 ```yml
-version: '3'
-
 services:
   # ... define other services using the `data` volume here
   backup:
@@ -180,8 +166,6 @@ volumes:
 See [Dropbox Setup](../how-tos/set-up-dropbox.md) on how to get the appropriate environment values.
 
 ```yml
-version: '3'
-
 services:
   # ... define other services using the `data` volume here
   backup:
@@ -190,7 +174,7 @@ services:
       DROPBOX_REFRESH_TOKEN: REFRESH_KEY  # replace
       DROPBOX_APP_KEY: APP_KEY  # replace
       DROPBOX_APP_SECRET: APP_SECRET  # replace
-      DROPBOX_REMOTE_PATH: /Apps/my-test-app/some_subdir  # replace
+      DROPBOX_REMOTE_PATH: /somedir  # replace
     volumes:
       - data:/backup/my-app-backup:ro
       - /var/run/docker.sock:/var/run/docker.sock:ro
@@ -202,8 +186,6 @@ volumes:
 ## Backing up locally
 
 ```yml
-version: '3'
-
 services:
   # ... define other services using the `data` volume here
   backup:
@@ -223,8 +205,6 @@ volumes:
 ## Backing up to AWS S3 as well as locally
 
 ```yml
-version: '3'
-
 services:
   # ... define other services using the `data` volume here
   backup:
@@ -245,8 +225,6 @@ volumes:
 ## Running on a custom cron schedule
 
 ```yml
-version: '3'
-
 services:
   # ... define other services using the `data` volume here
   backup:
@@ -268,8 +246,6 @@ volumes:
 ## Rotating away backups that are older than 7 days
 
 ```yml
-version: '3'
-
 services:
   # ... define other services using the `data` volume here
   backup:
@@ -289,11 +265,9 @@ volumes:
   data:
 ```
 
-## Encrypting your backups using GPG
+## Encrypting your backups symmetrically using GPG
 
 ```yml
-version: '3'
-
 services:
   # ... define other services using the `data` volume here
   backup:
@@ -311,16 +285,39 @@ volumes:
   data:
 ```
 
-## Using mysqldump to prepare the backup
+## Encrypting your backups asymmetrically using GPG
 
 ```yml
-version: '3'
+services:
+  # ... define other services using the `data` volume here
+  backup:
+    image: offen/docker-volume-backup:v2
+    environment:
+      AWS_S3_BUCKET_NAME: backup-bucket
+      AWS_ACCESS_KEY_ID: AKIAIOSFODNN7EXAMPLE
+      AWS_SECRET_ACCESS_KEY: wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY
+      GPG_PUBLIC_KEY_RING: | 
+        -----BEGIN PGP PUBLIC KEY BLOCK-----
 
+        D/cIHu6GH/0ghlcUVSbgMg5RRI5QKNNKh04uLAPxr75mKwUg0xPUaWgyyrAChVBi
+        ...
+        -----END PGP PUBLIC KEY BLOCK-----
+    volumes:
+      - data:/backup/my-app-backup:ro
+      - /var/run/docker.sock:/var/run/docker.sock:ro
+
+volumes:
+  data:
+```
+
+## Using mariadb-dump/mysqldump to prepare the backup
+
+```yml
 services:
   database:
     image: mariadb:latest
     labels:
-      - docker-volume-backup.archive-pre=/bin/sh -c 'mysqldump -psecret --all-databases > /tmp/dumps/dump.sql'
+      - docker-volume-backup.archive-pre=/bin/sh -c 'mariadb-dump -psecret --all-databases > /tmp/dumps/dump.sql'
     volumes:
       - data:/tmp/dumps
   backup:
@@ -331,7 +328,7 @@ services:
     volumes:
       - ./local:/archive
       - data:/backup/data:ro
-      - /var/run/docker.sock:/var/run/docker.sock
+      - /var/run/docker.sock:/var/run/docker.sock:ro
 
 volumes:
   data:
@@ -340,8 +337,6 @@ volumes:
 ## Running multiple instances in the same setup
 
 ```yml
-version: '3'
-
 services:
   # ... define other services using the `data_1` and `data_2` volumes here
   backup_1: &backup_service
@@ -375,8 +370,6 @@ volumes:
 ## Running as a non-root user
 
 ```yml
-version: '3'
-
 services:
   # ... define other services using the `data` volume here
   backup:

docs/reference/index.md

@@ -9,7 +9,7 @@ nav_order: 2
 Backup targets, schedule and retention are configured using environment variables.
 
 {: .note }
-You can use any environment variable from below also with a `_FILE` suffix to be able to load the value from a file.
+As per established convention, you can use any environment variable key from below with a `_FILE` suffix in order to load the value from a file instead.
 This is typically useful when using [Docker Secrets](https://docs.docker.com/engine/swarm/secrets/) or similar.
 Note that secrets will not be trimmed of leading or trailing whitespace.
 
@@ -17,13 +17,14 @@ Note that secrets will not be trimmed of leading or trailing whitespace.
 In case you encounter double quoted values in your runtime configuration you might still be using an [older version of `docker-compose`][compose-issue].
 You can work around this by either updating `docker-compose` or unquoting your configuration values.
 
-You can populate below template according to your requirements and use it as your `env_file`:
+You can populate below template according to your requirements and use it as your `env_file`.
+The values for each key currently match its default.
 
 {% raw %}
 ```
 ########### BACKUP SCHEDULE
 
-
+# Backups can be run on fixed scheduled that are defined as a cron expression.
 # A cron expression represents a set of times, using 5 or 6 space-separated fields.
 #
 # Field name   | Mandatory? | Allowed values  | Allowed special characters
@@ -37,35 +38,45 @@ You can populate below template according to your requirements and use it as you
 #
 # Month and Day-of-week field values are case insensitive.
 # "SUN", "Sun", and "sun" are equally accepted.
-# If no value is set, `@daily` will be used.
 # If you do not want the cron to ever run, use `0 0 5 31 2 ?`.
+# Refer to sites like <https://crontab.guru> for help.
+# If no value is set, `@daily` will be used, which runs every
+# day at midnight.
 
-# BACKUP_CRON_EXPRESSION="0 2 * * *"
+# BACKUP_CRON_EXPRESSION="@daily"
+
+# ---
 
 # The compression algorithm used in conjunction with tar.
-# Valid options are: "gz" (Gzip) and "zst" (Zstd).
-# Note that the selection affects the file extension.
+# Valid options are: "gz" (Gzip), "zst" (Zstd) or "none" (tar only).
+# Default is "gz". Note that the selection affects the file extension.
 
 # BACKUP_COMPRESSION="gz"
 
+# ---
+
 # Parallelism level for "gz" (Gzip) compression.
 # Defines how many blocks of data are concurrently processed.
 # Higher values result in faster compression. No effect on decompression
 # Default = 1. Setting this to 0 will use all available threads.
 
-# GZIP_PARALLELISM=1
+# GZIP_PARALLELISM="1"
 
-# The name of the backup file including the extension.
-# Format verbs will be replaced as in `strftime`. Omitting them
+# ---
+
+# The desired name of the backup file including the extension.
+# Format verbs will be replaced as in `strftime`. Omitting all verbs
 # will result in the same filename for every backup run, which means previous
 # versions will be overwritten on subsequent runs.
 # Extension can be defined literally or via "{{ .Extension }}" template,
-# in which case it will become either "tar.gz" or "tar.zst" (depending
+# in which case it will become either "tar.gz", "tar.zst" or ".tar" (depending
 # on your BACKUP_COMPRESSION setting).
 # The default results in filenames like: `backup-2021-08-29T04-00-00.tar.gz`.
 
 # BACKUP_FILENAME="backup-%Y-%m-%dT%H-%M-%S.{{ .Extension }}"
 
+# ---
+
 # Setting BACKUP_FILENAME_EXPAND to true allows for environment variable
 # placeholders in BACKUP_FILENAME, BACKUP_LATEST_SYMLINK and in
 # BACKUP_PRUNING_PREFIX that will get expanded at runtime,
@@ -76,10 +87,15 @@ You can populate below template according to your requirements and use it as you
 
 # BACKUP_FILENAME_EXPAND="true"
 
+# ---
+
 # When storing local backups, a symlink to the latest backup can be created
 # in case a value is given for this key. This has no effect on remote backups.
+# Example: "backup.latest.tar.gz"
 
-# BACKUP_LATEST_SYMLINK="backup.latest.tar.gz"
+# BACKUP_LATEST_SYMLINK=""
+
+# ---
 
 # ************************************************************************
 # The BACKUP_FROM_SNAPSHOT option has been deprecated and will be removed
@@ -93,203 +109,285 @@ You can populate below template according to your requirements and use it as you
 
 # BACKUP_FROM_SNAPSHOT="false"
 
-# By default, the `/backup` directory inside the container will be backed up.
-# In case you need to use a custom location, set `BACKUP_SOURCES`.
+# ---
 
-# BACKUP_SOURCES="/other/location"
+# By default, the contents of the `/backup` directory inside the container
+# will be backed up. In case you need to use a custom location, set `BACKUP_SOURCES`.
+# Example: "/other/location"
 
-# When given, all files in BACKUP_SOURCES whose full path matches the given
+# BACKUP_SOURCES="/backup"
+
+# ---
+
+# When a value is given, all files in BACKUP_SOURCES whose full path matches the
 # regular expression will be excluded from the archive. Regular Expressions
 # can be used as from the Go standard library https://pkg.go.dev/regexp
+# Example: "\.log$"
 
-# BACKUP_EXCLUDE_REGEXP="\.log$"
+# BACKUP_EXCLUDE_REGEXP=""
+
+# ---
 
 # Exclude one or many storage backends from the pruning process.
+# Available backends are: S3, WebDAV, SSH, Local, Dropbox, Azure
 # E.g. with one backend excluded: BACKUP_SKIP_BACKENDS_FROM_PRUNE=s3
 # E.g. with multiple backends excluded: BACKUP_SKIP_BACKENDS_FROM_PRUNE=s3,webdav
-# Available backends are: S3, WebDAV, SSH, Local, Dropbox, Azure
-# Note: The name of the backends is case insensitive. 
+# Note: The names of the backends are case insensitive. 
 # Default: All backends get pruned.
 
-# BACKUP_SKIP_BACKENDS_FROM_PRUNE=
+# BACKUP_SKIP_BACKENDS_FROM_PRUNE=""
 
-########### BACKUP STORAGE
+########### S3 COMPATIBLE STORAGE
 
 # The name of the remote bucket that should be used for storing backups. If
 # this is not set, no remote backups will be stored.
+# Example: "backup-bucket"
 
-# AWS_S3_BUCKET_NAME="backup-bucket"
+# AWS_S3_BUCKET_NAME=""
+
+# ---
 
 # If you want to store the backup in a non-root location on your bucket
 # you can provide a path. The path must not contain a leading slash.
+# Example: "my/backup/location"
 
-# AWS_S3_PATH="my/backup/location"
+# AWS_S3_PATH=""
+
+# ---
 
 # Define credentials for authenticating against the backup storage and a bucket
 # name. Although all of these keys are `AWS`-prefixed, the setup can be used
 # with any S3 compatible storage.
 
-# AWS_ACCESS_KEY_ID="<xxx>"
-# AWS_SECRET_ACCESS_KEY="<xxx>"
+# AWS_ACCESS_KEY_ID=""
+# AWS_SECRET_ACCESS_KEY=""
+
+# ---
 
 # Instead of providing static credentials, you can also use IAM instance profiles
 # or similar to provide authentication. Some possible configuration options on AWS:
 # - EC2: http://169.254.169.254
 # - ECS: http://169.254.170.2
 
-# AWS_IAM_ROLE_ENDPOINT="http://169.254.169.254"
+# AWS_IAM_ROLE_ENDPOINT=""
+
+# ---
 
 # This is the FQDN of your storage server, e.g. `storage.example.com`.
-# Do not set this when working against AWS S3 (the default value is
-# `s3.amazonaws.com`). If you need to set a specific (non-https) protocol, you
-# will need to use the option below.
+# If you need to set a specific (non-https) protocol, you will need to use the option below.
+# The default value points to the standard AWS S3 endpoint.
 
-# AWS_ENDPOINT="storage.example.com"
+# AWS_ENDPOINT="s3.amazonaws.com"
 
-# The protocol to be used when communicating with your storage server.
+# ---
+
+# The protocol to be used when communicating with your S3 storage server.
 # Defaults to "https". You can set this to "http" when communicating with
-# a different Docker container on the same host for example.
+# a different Docker container in the same virtual network for example.
 
 # AWS_ENDPOINT_PROTO="https"
 
+# ---
+
 # Setting this variable to `true` will disable verification of
 # SSL certificates for AWS_ENDPOINT. You shouldn't use this unless you use
 # self-signed certificates for your remote storage backend. This can only be
 # used when AWS_ENDPOINT_PROTO is set to `https`.
 
-# AWS_ENDPOINT_INSECURE="true"
+# AWS_ENDPOINT_INSECURE="false"
+
+# ---
 
 # If you wish to use self signed certificates your S3 server, you can pass
 # the location of a PEM encoded CA certificate and it will be used for
-# validating your certificates.
-# Alternatively, pass a PEM encoded string containing the certificate.
+# validating your certificates. Alternatively, pass a PEM encoded string
+# containing the certificate.
+# Example: "/path/to/cert.pem"
 
-# AWS_ENDPOINT_CA_CERT="/path/to/cert.pem"
+# AWS_ENDPOINT_CA_CERT=""
 
-# Setting this variable will change the S3 storage class header.
-# Defaults to "STANDARD", you can set this value according to your needs.
+# ---
 
-# AWS_STORAGE_CLASS="GLACIER"
+# Setting a value for this key will change the S3 storage class header.
+# Default behavior is to use the standard class when no value is given.
+# Example: "GLACIER"
+
+# AWS_STORAGE_CLASS=""
+
+# ---
 
 # Setting this variable will change the S3 default part size for the copy step.
 # This value is useful when you want to upload large files.
-# NB : While using Scaleway as S3 provider, be aware that the parts counter is set to 1.000.
+# NB: While using Scaleway as S3 provider, be aware that the parts counter is set to 1.000.
 # While Minio uses a hard coded value to 10.000. As a workaround, try to set a higher value.
 # Defaults to "16" (MB) if unset (from minio), you can set this value according to your needs.
 # The unit is in MB and an integer.
 
-# AWS_PART_SIZE=16
+# AWS_PART_SIZE="16"
 
-# You can also backup files to any WebDAV server:
+########### WEBDAV STORAGE
 
 # The URL of the remote WebDAV server
+# Example: "https://webdav.example.com"
 
-# WEBDAV_URL="https://webdav.example.com"
+# WEBDAV_URL=""
+
+# ---
 
 # The Directory to place the backups to on the WebDAV server.
 # If the path is not present on the server it will be created.
+# Example: "/my/directory/"
 
-# WEBDAV_PATH="/my/directory/"
+# WEBDAV_PATH=""
+
+# ---
 
 # The username for the WebDAV server
+# Example: "user"
 
-# WEBDAV_USERNAME="user"
+# WEBDAV_USERNAME=""
+
+# ---
 
 # The password for the WebDAV server
+# Example: "password"
 
-# WEBDAV_PASSWORD="password"
+# WEBDAV_PASSWORD=""
 
-# Setting this variable to `true` will disable verification of
+# ---
+
+# Setting this variable to "true" will disable verification of
 # SSL certificates for WEBDAV_URL. You shouldn't use this unless you use
 # self-signed certificates for your remote storage backend.
 
-# WEBDAV_URL_INSECURE="true"
+# WEBDAV_URL_INSECURE="false"
 
-# You can also backup files to any SSH server:
+########### SSH/SFTP STORAGE
 
-# The URL of the remote SSH server
+# The FQDN of the remote SSH server
+# Example: "server.local"
 
-# SSH_HOST_NAME="server.local"
+# SSH_HOST_NAME=""
+
+# ---
 
 # The port of the remote SSH server
-# Optional variable default value is `22`
 
-# SSH_PORT=2222
+# SSH_PORT="22"
+
+# ---
 
 # The Directory to place the backups to on the SSH server.
+# Example: "/home/user/backups"
 
-# SSH_REMOTE_PATH="/my/directory/"
+# SSH_REMOTE_PATH=""
+
+# ---
 
 # The username for the SSH server
+# Example: "user"
 
-# SSH_USER="user"
+# SSH_USER=""
+
+# ---
 
 # The password for the SSH server
+# Example: "password"
 
-# SSH_PASSWORD="password"
+# SSH_PASSWORD=""
 
-# The private key path in container for SSH server
-# Default value: /root/.ssh/id_rsa
-# If file is mounted to /root/.ssh/id_rsa path it will be used. Non-RSA keys will
-# also work.
+# ---
+
+# The private key path in container for SSH server.
+# Consumers can mount a file into /root/.ssh/id_rsa (or the respective value)
+# in order to have it being used. Non-RSA keys (e.g. ed25519) will also work.
 
 # SSH_IDENTITY_FILE="/root/.ssh/id_rsa"
 
-# The passphrase for the identity file
+# ---
 
-# SSH_IDENTITY_PASSPHRASE="pass"
+# The passphrase for the identity file if applicable
+# Example: "pass"
+
+# SSH_IDENTITY_PASSPHRASE=""
+
+########### AZURE BLOB STORAGE
 
 # The credential's account name when using Azure Blob Storage. This has to be
 # set when using Azure Blob Storage.
+# Example: "account-name"
 
-# AZURE_STORAGE_ACCOUNT_NAME="account-name"
+# AZURE_STORAGE_ACCOUNT_NAME=""
+
+# ---
 
 # The credential's primary account key when using Azure Blob Storage. If this
 # is not given, the command tries to fall back to using a connection string
-# (if given) or a managed identity (if nothing is given).
+# (if given) or a managed identity (if neither is set).
 
-# AZURE_STORAGE_PRIMARY_ACCOUNT_KEY="<xxx>"
+# AZURE_STORAGE_PRIMARY_ACCOUNT_KEY=""
+
+# ---
 
 # A connection string for accessing Azure Blob Storage. If this
 # is not given, the command tries to fall back to using a primary account key
-# (if given) or a managed identity (if nothing is given).
+# (if given) or a managed identity (if neither is set).
 
-# AZURE_STORAGE_CONNECTION_STRING="<xxx>"
+# AZURE_STORAGE_CONNECTION_STRING=""
+
+# ---
 
 # The container name when using Azure Blob Storage.
+# Example: "container-name"
 
-# AZURE_STORAGE_CONTAINER_NAME="container-name"
+# AZURE_STORAGE_CONTAINER_NAME=""
+
+# ---
 
 # The service endpoint when using Azure Blob Storage. This is a template that
 # can be passed the account name as shown in the default value below.
 
 # AZURE_STORAGE_ENDPOINT="https://{{ .AccountName }}.blob.core.windows.net/"
 
-# Absolute remote path in your Dropbox where the backups shall be stored.
-# Note: Use your app's subpath in Dropbox, if it doesn't have global access.
-# Consulte the README for further information.
+# ---
 
 # The access tier when using Azure Blob Storage. Possible values are
 # https://github.com/Azure/azure-sdk-for-go/blob/sdk/storage/azblob/v1.3.2/sdk/storage/azblob/internal/generated/zz_constants.go#L14-L30
+# Example: "Cold"
 
-# AZURE_STORAGE_ACCESS_TIER="Cold"
+# AZURE_STORAGE_ACCESS_TIER=""
 
-# DROPBOX_REMOTE_PATH="/my/directory"
+########### DROPBOX STORAGE
+
+# Absolute remote path in your Dropbox where the backups shall be stored.
+# Note: Use your app's subpath in Dropbox, if it doesn't have global access.
+# Consult the README for further information.
+# Example: "/my/directory"
+
+# DROPBOX_REMOTE_PATH=""
+
+# ---
+
+# App key and app secret from your app created at https://www.dropbox.com/developers/apps
+
+# DROPBOX_APP_KEY=""
+# DROPBOX_APP_SECRET=""
+
+# ---
 
 # Number of concurrent chunked uploads for Dropbox.
 # Values above 6 usually result in no enhancements.
 
 # DROPBOX_CONCURRENCY_LEVEL="6"
 
-# App key and app secret from your app created at https://www.dropbox.com/developers/apps/info
-
-# DROPBOX_APP_KEY=""
-# DROPBOX_APP_SECRET=""
+# ---
 
 # Refresh token to request new short-lived tokens (OAuth2). Consult README to see how to get one.
 
 # DROPBOX_REFRESH_TOKEN=""
 
+########### LOCAL FILE STORAGE
+
 # In addition to storing backups remotely, you can also keep local copies.
 # Pass a container-local path to store your backups if needed. You also need to
 # mount a local folder or Docker volume into that location (`/archive`
@@ -311,10 +409,12 @@ You can populate below template according to your requirements and use it as you
 # for such files, or to configure BACKUP_PRUNING_PREFIX to limit
 # removal to certain files.
 
-# Define this value to enable automatic rotation of old backups. The value
-# declares the number of days for which a backup is kept.
+# Pass zero or a positive integer value to enable automatic rotation of
+# old backups. The value declares the number of days for which a backup is kept.
 
-# BACKUP_RETENTION_DAYS="7"
+# BACKUP_RETENTION_DAYS="-1"
+
+# ---
 
 # In case the duration a backup takes fluctuates noticeably in your setup
 # you can adjust this setting to make sure there are no race conditions
@@ -326,6 +426,8 @@ You can populate below template according to your requirements and use it as you
 
 # BACKUP_PRUNING_LEEWAY="1m"
 
+# ---
+
 # In case your target bucket or directory contains other files than the ones
 # managed by this container, you can limit the scope of rotation by setting
 # a prefix value. This would usually be the non-parametrized part of your
@@ -333,13 +435,37 @@ You can populate below template according to your requirements and use it as you
 # you can set BACKUP_PRUNING_PREFIX to `db-backup-` and make sure
 # unrelated files are not affected by the rotation mechanism.
 
-# BACKUP_PRUNING_PREFIX="backup-"
+# BACKUP_PRUNING_PREFIX=""
 
 ########### BACKUP ENCRYPTION
 
-# Backups can be encrypted using gpg in case a passphrase is given.
+# All of the encryption options are mutually exclusive. Provide a single option
+# for the encryption scheme of your choice.
 
-# GPG_PASSPHRASE="<xxx>"
+# Backups can be encrypted symmetrically using gpg in case a passphrase is given.
+
+# GPG_PASSPHRASE=""
+
+# ---
+
+# Backups can be encrypted asymmetrically using gpg in case publickeys are given.
+# You can use pipe syntax to pass a multiline value.
+
+# GPG_PUBLIC_KEY_RING=""
+
+# ---
+
+# Backups can be encrypted symmetrically using age in case a passphrase is given.
+
+# AGE_PASSPHRASE=""
+
+# ---
+
+# Backups can be encrypted asymmetrically using age in case publickeys are given.
+# Multiple keys need to be provided as a comma separated list. Right now, this
+# supports `age` and `ssh` keys
+
+# AGE_PUBLIC_KEYS=""
 
 ########### STOPPING CONTAINERS AND SERVICES DURING BACKUP
 
@@ -347,18 +473,17 @@ You can populate below template according to your requirements and use it as you
 # `docker-volume-backup.stop-during-backup` label. By default, all containers and
 # services that are labeled with `true` will be stopped. If you need more fine
 # grained control (e.g. when running multiple containers based on this image),
-# you can override this default by specifying a different value here.
-# BACKUP_STOP_DURING_BACKUP_LABEL="service1"
+# you can override this default by specifying a different string value here.
+# BACKUP_STOP_DURING_BACKUP_LABEL="true"
 
 # When trying to scale down Docker Swarm services, give up after
 # the specified amount of time in case the service has not converged yet.
 # In case you need to adjust this timeout, supply a duration
 # value as per https://pkg.go.dev/time#ParseDuration to `BACKUP_STOP_SERVICE_TIMEOUT`.
-# Defaults to 5 minutes.
 
 # BACKUP_STOP_SERVICE_TIMEOUT="5m"
 
-########### EXECUTING COMMANDS IN CONTAINERS PRE/POST BACKUP
+########### EXECUTING COMMANDS IN CONTAINERS DURING THE BACKUP LIFECYCLE
 
 # It is possible to define commands to be run in any container before and after
 # a backup is conducted. The commands themselves are defined in labels like
@@ -369,15 +494,17 @@ You can populate below template according to your requirements and use it as you
 # is configured to be "true", command execution output will be forwarded to
 # the backup container's stdout and stderr.
 
-# EXEC_FORWARD_OUTPUT="true"
+# EXEC_FORWARD_OUTPUT="false"
+
+# ---
 
 # Without any further configuration, all commands defined in labels will be
 # run before and after a backup. If you need more fine grained control, you
 # can use this option to set a label that will be used for narrowing down
-# the set of eligible containers. When set, an eligible container will also need
-# to be labeled as `docker-volume-backup.exec-label=database`.
+# the set of eligible containers. E.g. when setting this to `database`,
+# an eligible container will also need to be labeled as `docker-volume-backup.exec-label=database`.
 
-# EXEC_LABEL="database"
+# EXEC_LABEL=""
 
 ########### NOTIFICATIONS
 
@@ -388,10 +515,13 @@ You can populate below template according to your requirements and use it as you
 # on how to do this can be found in the README. When providing multiple URLs or
 # an URL that contains a comma, the values can be URL encoded to avoid ambiguities.
 
-# The below URL demonstrates how to send an email using the provided SMTP
+# The following example URL demonstrates how to send an email using the provided SMTP
 # configuration and credentials.
+# Example: "smtp://username:password@host:587/?fromAddress=sender@example.com&toAddresses=recipient@example.com"
 
-# NOTIFICATION_URLS=smtp://username:password@host:587/?fromAddress=sender@example.com&toAddresses=recipient@example.com
+# NOTIFICATION_URLS=""
+
+# ---
 
 # By default, notifications would only be sent out when a backup run fails
 # To receive notifications for every run, set `NOTIFICATION_LEVEL` to `info`
@@ -403,8 +533,9 @@ You can populate below template according to your requirements and use it as you
 
 # If you are interfacing with Docker via TCP you can set the Docker host here
 # instead of mounting the Docker socket as a volume. This is unset by default.
+# Example: "tcp://docker_socket_proxy:2375"
 
-# DOCKER_HOST="tcp://docker_socket_proxy:2375"
+# DOCKER_HOST=""
 
 ########### LOCK_TIMEOUT
 
@@ -431,20 +562,25 @@ You can populate below template according to your requirements and use it as you
 # The recipient(s) of the notification. Supply a comma separated list
 # of addresses if you want to notify multiple recipients. If this is
 # not set, no emails will be sent.
+# Example: "you@example.com"
 
-# EMAIL_NOTIFICATION_RECIPIENT="you@example.com"
+# EMAIL_NOTIFICATION_RECIPIENT=""
 
-# The "From" header of the sent email. Defaults to `noreply@nohost`.
+# ---
 
-# EMAIL_NOTIFICATION_SENDER="no-reply@example.com"
+# The "From" header of the sent email.
+# Example: "no-reply@example.com"
+
+# EMAIL_NOTIFICATION_SENDER="noreply@nohost"
+
+# ---
 
 # Configuration and credentials for the SMTP server to be used.
-# EMAIL_SMTP_PORT defaults to 587.
 
-# EMAIL_SMTP_HOST="posteo.de"
-# EMAIL_SMTP_PASSWORD="<xxx>"
-# EMAIL_SMTP_USERNAME="no-reply@example.com"
-# EMAIL_SMTP_PORT="<port>"
+# EMAIL_SMTP_HOST=""
+# EMAIL_SMTP_PASSWORD=""
+# EMAIL_SMTP_USERNAME=""
+# EMAIL_SMTP_PORT="587"
 ```
 {% endraw %}
 

go.mod

@@ -1,60 +1,70 @@
 module github.com/offen/docker-volume-backup
 
-go 1.22
+go 1.24
 
 require (
-	github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.7.0
-	github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.4.0
+	filippo.io/age v1.2.1
+	github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.10.0
+	github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.6.1
 	github.com/containrrr/shoutrrr v0.8.0
 	github.com/cosiner/argv v0.1.0
-	github.com/docker/cli v27.1.1+incompatible
-	github.com/docker/docker v27.1.1+incompatible
+	github.com/docker/cli v28.2.2+incompatible
+	github.com/docker/docker v28.2.2+incompatible
 	github.com/gofrs/flock v0.12.1
 	github.com/joho/godotenv v1.5.1
-	github.com/klauspost/compress v1.17.9
+	github.com/klauspost/compress v1.18.0
 	github.com/leekchan/timeutil v0.0.0-20150802142658-28917288c48d
-	github.com/minio/minio-go/v7 v7.0.74
+	github.com/minio/minio-go/v7 v7.0.92
 	github.com/offen/envconfig v1.5.0
-	github.com/otiai10/copy v1.14.0
-	github.com/pkg/sftp v1.13.6
+	github.com/otiai10/copy v1.14.1
+	github.com/pkg/sftp v1.13.9
 	github.com/robfig/cron/v3 v3.0.1
-	github.com/studio-b12/gowebdav v0.9.0
-	golang.org/x/crypto v0.25.0
-	golang.org/x/oauth2 v0.22.0
-	golang.org/x/sync v0.8.0
-	mvdan.cc/sh/v3 v3.8.0
+	github.com/studio-b12/gowebdav v0.10.0
+	golang.org/x/crypto v0.38.0
+	golang.org/x/oauth2 v0.30.0
+	golang.org/x/sync v0.14.0
+	mvdan.cc/sh/v3 v3.11.0
 )
 
 require (
+	filippo.io/edwards25519 v1.1.0 // indirect
 	github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78 // indirect
-	github.com/cloudflare/circl v1.3.7 // indirect
+	github.com/cloudflare/circl v1.6.0 // indirect
+	github.com/containerd/errdefs v1.0.0 // indirect
+	github.com/containerd/errdefs/pkg v0.3.0 // indirect
 	github.com/containerd/log v0.1.0 // indirect
 	github.com/distribution/reference v0.6.0 // indirect
 	github.com/felixge/httpsnoop v1.0.4 // indirect
 	github.com/go-ini/ini v1.67.0 // indirect
-	github.com/go-logr/logr v1.4.1 // indirect
+	github.com/go-logr/logr v1.4.2 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
-	github.com/goccy/go-json v0.10.3 // indirect
-	github.com/golang-jwt/jwt/v5 v5.2.1 // indirect
+	github.com/goccy/go-json v0.10.5 // indirect
+	github.com/golang-jwt/jwt/v5 v5.2.2 // indirect
 	github.com/golang/protobuf v1.5.4 // indirect
+	github.com/minio/crc64nvme v1.0.1 // indirect
 	github.com/moby/docker-image-spec v1.3.1 // indirect
+	github.com/moby/sys/atomicwriter v0.1.0 // indirect
+	github.com/otiai10/mint v1.6.3 // indirect
+	github.com/philhofer/fwd v1.1.3-0.20240916144458-20a13a1f6b7c // indirect
+	github.com/tinylib/msgp v1.3.0 // indirect
+	go.opentelemetry.io/auto/sdk v1.1.0 // indirect
 	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.51.0 // indirect
-	go.opentelemetry.io/otel v1.26.0 // indirect
+	go.opentelemetry.io/otel v1.36.0 // indirect
 	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.26.0 // indirect
-	go.opentelemetry.io/otel/metric v1.26.0 // indirect
+	go.opentelemetry.io/otel/metric v1.36.0 // indirect
 	go.opentelemetry.io/otel/sdk v1.26.0 // indirect
-	go.opentelemetry.io/otel/trace v1.26.0 // indirect
+	go.opentelemetry.io/otel/trace v1.36.0 // indirect
 	golang.org/x/time v0.0.0-20220609170525-579cf78fd858 // indirect
 	google.golang.org/genproto/googleapis/api v0.0.0-20240227224415-6ceb2ff114de // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20240415180920-8c6c420018be // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20240903143218-8af14fe29dc1 // indirect
 )
 
 require (
-	github.com/Azure/azure-sdk-for-go/sdk/azcore v1.13.0 // indirect
-	github.com/Azure/azure-sdk-for-go/sdk/internal v1.10.0 // indirect
-	github.com/AzureAD/microsoft-authentication-library-for-go v1.2.2 // indirect
+	github.com/Azure/azure-sdk-for-go/sdk/azcore v1.18.0 // indirect
+	github.com/Azure/azure-sdk-for-go/sdk/internal v1.11.1 // indirect
+	github.com/AzureAD/microsoft-authentication-library-for-go v1.4.2 // indirect
 	github.com/Microsoft/go-winio v0.5.2 // indirect
-	github.com/ProtonMail/go-crypto v1.1.0-alpha.1
+	github.com/ProtonMail/go-crypto v1.3.0
 	github.com/docker/go-connections v0.4.0 // indirect
 	github.com/docker/go-units v0.4.0 // indirect
 	github.com/dropbox/dropbox-sdk-go-unofficial/v6 v6.0.5
@@ -62,7 +72,7 @@ require (
 	github.com/fatih/color v1.17.0 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
 	github.com/google/uuid v1.6.0 // indirect
-	github.com/klauspost/cpuid/v2 v2.2.8 // indirect
+	github.com/klauspost/cpuid/v2 v2.2.10 // indirect
 	github.com/klauspost/pgzip v1.2.6
 	github.com/kr/fs v0.1.0 // indirect
 	github.com/kylelemons/godebug v1.1.0 // indirect
@@ -75,10 +85,10 @@ require (
 	github.com/opencontainers/image-spec v1.0.3-0.20211202183452-c5a74bcca799 // indirect
 	github.com/pkg/browser v0.0.0-20240102092130-5ac0b6a4141c // indirect
 	github.com/pkg/errors v0.9.1 // indirect
-	github.com/rs/xid v1.5.0 // indirect
+	github.com/rs/xid v1.6.0 // indirect
 	github.com/sirupsen/logrus v1.9.3 // indirect
-	golang.org/x/net v0.27.0 // indirect
-	golang.org/x/sys v0.22.0 // indirect
-	golang.org/x/text v0.16.0 // indirect
+	golang.org/x/net v0.40.0 // indirect
+	golang.org/x/sys v0.33.0 // indirect
+	golang.org/x/text v0.25.0 // indirect
 	gotest.tools/v3 v3.0.3 // indirect
 )

go.sum

@@ -1,3 +1,5 @@
+c2sp.org/CCTV/age v0.0.0-20240306222714-3ec4d716e805 h1:u2qwJeEvnypw+OCPUHmoZE3IqwfuN5kgDfo5MLzpNM0=
+c2sp.org/CCTV/age v0.0.0-20240306222714-3ec4d716e805/go.mod h1:FomMrUJ2Lxt5jCLmZkG3FHa72zUprnhd3v/Z18Snm4w=
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
@@ -31,36 +33,50 @@ cloud.google.com/go/storage v1.6.0/go.mod h1:N7U0C8pVQ/+NIKOBQyamJIeKQKkZ+mxpohl
 cloud.google.com/go/storage v1.8.0/go.mod h1:Wv1Oy7z6Yz3DshWRJFhqM/UCfaWIRTdp0RXyy7KQOVs=
 cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9ullr3+Kg0=
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
-github.com/Azure/azure-sdk-for-go/sdk/azcore v1.13.0 h1:GJHeeA2N7xrG3q30L2UXDyuWRzDM900/65j70wcM4Ww=
-github.com/Azure/azure-sdk-for-go/sdk/azcore v1.13.0/go.mod h1:l38EPgmsp71HHLq9j7De57JcKOWPyhrsW1Awm1JS6K0=
-github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.7.0 h1:tfLQ34V6F7tVSwoTf/4lH5sE0o6eCJuNDTmH09nDpbc=
-github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.7.0/go.mod h1:9kIvujWAA58nmPmWB1m23fyWic1kYZMxD9CxaWn4Qpg=
-github.com/Azure/azure-sdk-for-go/sdk/internal v1.10.0 h1:ywEEhmNahHBihViHepv3xPBn1663uRv2t2q/ESv9seY=
-github.com/Azure/azure-sdk-for-go/sdk/internal v1.10.0/go.mod h1:iZDifYGJTIgIIkYRNWPENUnqx6bJ2xnSDFI2tjwZNuY=
-github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/storage/armstorage v1.6.0 h1:PiSrjRPpkQNjrM8H0WwKMnZUdu1RGMtd/LdGKUrOo+c=
-github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/storage/armstorage v1.6.0/go.mod h1:oDrbWx4ewMylP7xHivfgixbfGBT6APAwsSoHRKotnIc=
-github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.4.0 h1:Be6KInmFEKV81c0pOAEbRYehLMwmmGI1exuFj248AMk=
-github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.4.0/go.mod h1:WCPBHsOXfBVnivScjs2ypRfimjEW0qPVLGgJkZlrIOA=
+filippo.io/age v1.2.1 h1:X0TZjehAZylOIj4DubWYU1vWQxv9bJpo+Uu2/LGhi1o=
+filippo.io/age v1.2.1/go.mod h1:JL9ew2lTN+Pyft4RiNGguFfOpewKwSHm5ayKD/A4004=
+filippo.io/edwards25519 v1.1.0 h1:FNf4tywRC1HmFuKW5xopWpigGjJKiJSV0Cqo0cJWDaA=
+filippo.io/edwards25519 v1.1.0/go.mod h1:BxyFTGdWcka3PhytdK4V28tE5sGfRvvvRV7EaN4VDT4=
+github.com/Azure/azure-sdk-for-go/sdk/azcore v1.18.0 h1:Gt0j3wceWMwPmiazCa8MzMA0MfhmPIz0Qp0FJ6qcM0U=
+github.com/Azure/azure-sdk-for-go/sdk/azcore v1.18.0/go.mod h1:Ot/6aikWnKWi4l9QB7qVSwa8iMphQNqkWALMoNT3rzM=
+github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.10.0 h1:j8BorDEigD8UFOSZQiSqAMOOleyQOOQPnUAwV+Ls1gA=
+github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.10.0/go.mod h1:JdM5psgjfBf5fo2uWOZhflPWyDBZ/O/CNAH9CtsuZE4=
+github.com/Azure/azure-sdk-for-go/sdk/azidentity/cache v0.3.2 h1:yz1bePFlP5Vws5+8ez6T3HWXPmwOK7Yvq8QxDBD3SKY=
+github.com/Azure/azure-sdk-for-go/sdk/azidentity/cache v0.3.2/go.mod h1:Pa9ZNPuoNu/GztvBSKk9J1cDJW6vk/n0zLtV4mgd8N8=
+github.com/Azure/azure-sdk-for-go/sdk/internal v1.11.1 h1:FPKJS1T+clwv+OLGt13a8UjqeRuh0O4SJ3lUriThc+4=
+github.com/Azure/azure-sdk-for-go/sdk/internal v1.11.1/go.mod h1:j2chePtV91HrC22tGoRX3sGY42uF13WzmmV80/OdVAA=
+github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/storage/armstorage v1.8.0 h1:LR0kAX9ykz8G4YgLCaRDVJ3+n43R8MneB5dTy2konZo=
+github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/storage/armstorage v1.8.0/go.mod h1:DWAciXemNf++PQJLeXUB4HHH5OpsAh12HZnu2wXE1jA=
+github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.6.1 h1:lhZdRq7TIx0GJQvSyX2Si406vrYsov2FXGp/RnSEtcs=
+github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.6.1/go.mod h1:8cl44BDmi+effbARHMQjgOKA2AYvcohNm7KEt42mSV8=
 github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78 h1:w+iIsaOQNcT7OZ575w+acHgRric5iCyQh+xv+KJ4HB8=
 github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78/go.mod h1:LmzpDX56iTiv29bbRTIsUNlaFfuhWRQBWjQdVyAevI8=
-github.com/AzureAD/microsoft-authentication-library-for-go v1.2.2 h1:XHOnouVk1mxXfQidrMEnLlPk9UMeRtyBTnEFtxkV0kU=
-github.com/AzureAD/microsoft-authentication-library-for-go v1.2.2/go.mod h1:wP83P5OoQ5p6ip3ScPr0BAq0BvuPAvacpEuSzyouqAI=
+github.com/AzureAD/microsoft-authentication-extensions-for-go/cache v0.1.1 h1:WJTmL004Abzc5wDB5VtZG2PJk5ndYDgVacGqfirKxjM=
+github.com/AzureAD/microsoft-authentication-extensions-for-go/cache v0.1.1/go.mod h1:tCcJZ0uHAmvjsVYzEFivsRTN00oz5BEsRgQHu5JZ9WE=
+github.com/AzureAD/microsoft-authentication-library-for-go v1.4.2 h1:oygO0locgZJe7PpYPXT5A29ZkwJaPqcva7BVeemZOZs=
+github.com/AzureAD/microsoft-authentication-library-for-go v1.4.2/go.mod h1:wP83P5OoQ5p6ip3ScPr0BAq0BvuPAvacpEuSzyouqAI=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
 github.com/Microsoft/go-winio v0.5.2 h1:a9IhgEQBCUEk6QCdml9CiJGhAws+YwffDHEMp1VMrpA=
 github.com/Microsoft/go-winio v0.5.2/go.mod h1:WpS1mjBmmwHBEWmogvA2mj8546UReBk4v8QkMxJ6pZY=
-github.com/ProtonMail/go-crypto v1.1.0-alpha.1 h1:iKLDnKGL+3u4Q5OjYgixAxWdkkGBPidCQumqVryUgtY=
-github.com/ProtonMail/go-crypto v1.1.0-alpha.1/go.mod h1:rA3QumHc/FZ8pAHreoekgiAbzpNsfQAosU5td4SnOrE=
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@@ -70,12 +86,14 @@ github.com/cosiner/argv v0.1.0/go.mod h1:EusR6TucWKX+zFgtdUsKT2Cvg45K5rtpCcWz4hK
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@@ -92,28 +110,28 @@ github.com/fatih/color v1.17.0 h1:GlRw1BRJxkpqUCBKzKOw098ed57fEsKeNjpTe3cSjK4=
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@@ -149,8 +167,9 @@ github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
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@@ -178,13 +197,15 @@ github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
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@@ -206,12 +227,18 @@ github.com/mattn/go-colorable v0.1.13/go.mod h1:7S9/ev0klgBDR4GtXTXX8a3vIGJpMovk
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@@ -226,27 +253,31 @@ github.com/opencontainers/go-digest v1.0.0 h1:apOUWs51W5PlhuyGyz9FCeeBIOUDA/6nW8
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 github.com/opencontainers/image-spec v1.0.3-0.20211202183452-c5a74bcca799 h1:rc3tiVYb5z54aKaDfakKn0dDjIyPpTtszkjuMzyt7ec=
 github.com/opencontainers/image-spec v1.0.3-0.20211202183452-c5a74bcca799/go.mod h1:BtxoFyWECRxE4U/7sNtV5W15zMzWCbyJoFRP3s7yZA0=
-github.com/otiai10/copy v1.14.0 h1:dCI/t1iTdYGtkvCuBG2BgR6KZa83PTclw4U5n2wAllU=
-github.com/otiai10/copy v1.14.0/go.mod h1:ECfuL02W+/FkTWZWgQqXPWZgW9oeKCSQ5qVfSc4qc4w=
-github.com/otiai10/mint v1.5.1 h1:XaPLeE+9vGbuyEHem1JNk3bYc7KKqyI/na0/mLd/Kks=
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 github.com/pkg/browser v0.0.0-20240102092130-5ac0b6a4141c/go.mod h1:7rwL4CYBLnjLxUqIJNnCWiEdr3bn6IUYi15bNlnbCCU=
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-github.com/rs/xid v1.5.0 h1:mKX4bl4iPYJtEIxp6CYiUuLQ/8DYMoz0PUdtGgMFRVc=
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 github.com/sirupsen/logrus v1.9.3 h1:dueUQJ1C2q9oE3F7wvmSGAaVtTmUizReu6fjN8uqzbQ=
@@ -260,10 +291,12 @@ github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81P
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
-github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
-github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
-github.com/studio-b12/gowebdav v0.9.0 h1:1j1sc9gQnNxbXXM4M/CebPOX4aXYtr7MojAVcN4dHjU=
-github.com/studio-b12/gowebdav v0.9.0/go.mod h1:bHA7t77X/QFExdeAnDzK6vKM34kEZAcE1OX4MfiwjkE=
+github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=
+github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+github.com/studio-b12/gowebdav v0.10.0 h1:Yewz8FFiadcGEu4hxS/AAJQlHelndqln1bns3hcJIYc=
+github.com/studio-b12/gowebdav v0.10.0/go.mod h1:bHA7t77X/QFExdeAnDzK6vKM34kEZAcE1OX4MfiwjkE=
+github.com/tinylib/msgp v1.3.0 h1:ULuf7GPooDaIlbyvgAxBV/FI7ynli6LZ1/nVUNu+0ww=
+github.com/tinylib/msgp v1.3.0/go.mod h1:ykjzy2wzgrlvpDCRc4LA8UXy6D8bzMSuAF3WD57Gok0=
 github.com/yuin/goldmark v1.1.25/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/yuin/goldmark v1.1.32/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
@@ -274,20 +307,22 @@ go.opencensus.io v0.22.0/go.mod h1:+kGneAE2xo2IficOXnaByMWTGM9T73dGwxeWcUqIpI8=
 go.opencensus.io v0.22.2/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
 go.opencensus.io v0.22.3/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
 go.opencensus.io v0.22.4/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
+go.opentelemetry.io/auto/sdk v1.1.0 h1:cH53jehLUN6UFLY71z+NDOiNJqDdPRaXzTel0sJySYA=
+go.opentelemetry.io/auto/sdk v1.1.0/go.mod h1:3wSPjt5PWp2RhlCcmmOial7AvC4DQqZb7a7wCow3W8A=
 go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.51.0 h1:Xs2Ncz0gNihqu9iosIZ5SkBbWo5T8JhhLJFMQL1qmLI=
 go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.51.0/go.mod h1:vy+2G/6NvVMpwGX/NyLqcC41fxepnuKHk16E6IZUcJc=
-go.opentelemetry.io/otel v1.26.0 h1:LQwgL5s/1W7YiiRwxf03QGnWLb2HW4pLiAhaA5cZXBs=
-go.opentelemetry.io/otel v1.26.0/go.mod h1:UmLkJHUAidDval2EICqBMbnAd0/m2vmpf/dAM+fvFs4=
+go.opentelemetry.io/otel v1.36.0 h1:UumtzIklRBY6cI/lllNZlALOF5nNIzJVb16APdvgTXg=
+go.opentelemetry.io/otel v1.36.0/go.mod h1:/TcFMXYjyRNh8khOAO9ybYkqaDBb/70aVwkNML4pP8E=
 go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.26.0 h1:1u/AyyOqAWzy+SkPxDpahCNZParHV8Vid1RnI2clyDE=
 go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.26.0/go.mod h1:z46paqbJ9l7c9fIPCXTqTGwhQZ5XoTIsfeFYWboizjs=
 go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.26.0 h1:1wp/gyxsuYtuE/JFxsQRtcCDtMrO2qMvlfXALU5wkzI=
 go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.26.0/go.mod h1:gbTHmghkGgqxMomVQQMur1Nba4M0MQ8AYThXDUjsJ38=
-go.opentelemetry.io/otel/metric v1.26.0 h1:7S39CLuY5Jgg9CrnA9HHiEjGMF/X2VHvoXGgSllRz30=
-go.opentelemetry.io/otel/metric v1.26.0/go.mod h1:SY+rHOI4cEawI9a7N1A4nIg/nTQXe1ccCNWYOJUrpX4=
+go.opentelemetry.io/otel/metric v1.36.0 h1:MoWPKVhQvJ+eeXWHFBOPoBOi20jh6Iq2CcCREuTYufE=
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 go.opentelemetry.io/otel/sdk v1.26.0 h1:Y7bumHf5tAiDlRYFmGqetNcLaVUZmh4iYfmGxtmz7F8=
 go.opentelemetry.io/otel/sdk v1.26.0/go.mod h1:0p8MXpqLeJ0pzcszQQN4F0S5FVjBLgypeGSngLsmirs=
-go.opentelemetry.io/otel/trace v1.26.0 h1:1ieeAUb4y0TE26jUFrCIXKpTuVK7uJGN9/Z/2LP5sQA=
-go.opentelemetry.io/otel/trace v1.26.0/go.mod h1:4iDxvGDQuUkHve82hJJ8UqrwswHYsZuWCBllGV2U2y0=
+go.opentelemetry.io/otel/trace v1.36.0 h1:ahxWNuqZjpdiFAyrIoQ4GIiAIhxAunQR6MUoKrsNd4w=
+go.opentelemetry.io/otel/trace v1.36.0/go.mod h1:gQ+OnDZzrybY4k4seLzPAWNwVBBVlF2szhehOBB/tGA=
 go.opentelemetry.io/proto/otlp v1.2.0 h1:pVeZGk7nXDC9O2hncA6nHldxEjm6LByfA2aN8IOkz94=
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 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
@@ -296,9 +331,12 @@ golang.org/x/crypto v0.0.0-20190605123033-f99c8df09eb5/go.mod h1:yigFU9vqHzYiE8U
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
-golang.org/x/crypto v0.1.0/go.mod h1:RecgLatLF4+eUMCP1PoPZQb+cVrJcOPbHkTkbkB9sbw=
-golang.org/x/crypto v0.25.0 h1:ypSNr+bnYL2YhwoMt2zPxHFmbAN1KZs/njMG3hxUp30=
-golang.org/x/crypto v0.25.0/go.mod h1:T+wALwcMOSE0kXgUAnPAHqTLW+XHgcELELW8VaDgm/M=
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+golang.org/x/crypto v0.19.0/go.mod h1:Iy9bg/ha4yyC70EfRS8jz+B6ybOBKMaSxLj6P6oBDfU=
+golang.org/x/crypto v0.23.0/go.mod h1:CKFgDieR+mRhux2Lsu27y0fO304Db0wZe70UKqHu0v8=
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+golang.org/x/crypto v0.38.0 h1:jt+WWG8IZlBnVbomuhg2Mdq0+BBQaHbtqHEFEigjUV8=
+golang.org/x/crypto v0.38.0/go.mod h1:MvrbAqul58NNYPKnOra203SB9vpuZW0e+RRZV+Ggqjw=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190306152737-a1d7652674e8/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190510132918-efd6b22b2522/go.mod h1:ZjyILWgesfNpC6sMxTJOJm9Kp84zZh5NQWvqDGG3Qr8=
@@ -330,6 +368,10 @@ golang.org/x/mod v0.1.1-0.20191107180719-034126e5016b/go.mod h1:QqPTAvyqsEbceGzB
 golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
+golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
+golang.org/x/mod v0.12.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
+golang.org/x/mod v0.15.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
+golang.org/x/mod v0.17.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
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@@ -359,17 +401,21 @@ golang.org/x/net v0.0.0-20200822124328-c89045814202/go.mod h1:/O7V0waA8r7cgGh81R
 golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
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-golang.org/x/net v0.1.0/go.mod h1:Cx3nUiGt4eDBEyega/BKRp+/AlGL8hYe7U9odMt2Cco=
-golang.org/x/net v0.27.0 h1:5K3Njcw06/l2y9vpGCSdcxWOYHOUk3dVNGDXN+FvAys=
-golang.org/x/net v0.27.0/go.mod h1:dDi0PyhWNoiUOrAS8uXv/vnScO4wnHQO4mj9fn/RytE=
+golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
+golang.org/x/net v0.10.0/go.mod h1:0qNGK6F8kojg2nk9dLZ2mShWaEBan6FAoqfSigmmuDg=
+golang.org/x/net v0.15.0/go.mod h1:idbUs1IY1+zTqbi8yxTbhexhEEk5ur9LInksu6HrEpk=
+golang.org/x/net v0.21.0/go.mod h1:bIjVDfnllIU7BJ2DNgfnXvpSvtn8VRwhlsaeUTyUS44=
+golang.org/x/net v0.25.0/go.mod h1:JkAGAh7GEvH74S6FOH42FLoXpXbE/aqXSrIQjXgsiwM=
+golang.org/x/net v0.40.0 h1:79Xs7wF06Gbdcg4kdCCIQArK11Z1hr5POQ6+fIYHNuY=
+golang.org/x/net v0.40.0/go.mod h1:y0hY0exeL2Pku80/zKK7tpntoX23cqL3Oa6njdgRtds=
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 golang.org/x/oauth2 v0.0.0-20191202225959-858c2ad4c8b6/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20201208152858-08078c50e5b5/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
-golang.org/x/oauth2 v0.22.0 h1:BzDx2FehcG7jJwgWLELCdmLuxk2i+x9UDpSiss2u0ZA=
-golang.org/x/oauth2 v0.22.0/go.mod h1:XYTD2NtWslqkgxebSiOHnXEap4TF09sJSc7H1sXbhtI=
+golang.org/x/oauth2 v0.30.0 h1:dnDm7JmhM45NNpd8FDDeLhK6FwqbOf4MLCM9zb1BOHI=
+golang.org/x/oauth2 v0.30.0/go.mod h1:B++QgG3ZKulg6sRPGD/mqlHQs5rB3Ml9erfeDY7xKlU=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
@@ -380,8 +426,13 @@ golang.org/x/sync v0.0.0-20200317015054-43a5402ce75a/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sync v0.0.0-20200625203802-6e8e738ad208/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.8.0 h1:3NFvSEYkUoMifnESzZl15y791HH1qU2xm6eCJU5ZPXQ=
-golang.org/x/sync v0.8.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
+golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.3.0/go.mod h1:FU7BRWz2tNW+3quACPkgCx/L+uEAv1htQ0V83Z9Rj+Y=
+golang.org/x/sync v0.6.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
+golang.org/x/sync v0.7.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
+golang.org/x/sync v0.10.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
+golang.org/x/sync v0.14.0 h1:woo0S4Yywslg6hp4eUFjTVOyKt0RookbpAHG4c1HmhQ=
+golang.org/x/sync v0.14.0/go.mod h1:1dzgHSNfp02xaA81J2MS99Qcpr2w7fw1gpm99rleRqA=
 golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190312061237-fead79001313/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -420,22 +471,38 @@ golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.22.0 h1:RI27ohtqKCnwULzJLqkv897zojh5/DwS/ENaMzUOaWI=
-golang.org/x/sys v0.22.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.12.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.17.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.20.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.28.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.33.0 h1:q3i8TbbEz+JRD9ywIRlyRAQbM0qF7hu24q3teo2hbuw=
+golang.org/x/sys v0.33.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
+golang.org/x/telemetry v0.0.0-20240228155512-f48c80bd79b2/go.mod h1:TeRTkGYfJXctD9OcfyVLyj2J3IxLnKwHJR8f4D8a3YE=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
-golang.org/x/term v0.1.0/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
-golang.org/x/term v0.22.0 h1:BbsgPEJULsl2fV/AT3v15Mjva5yXKQDyKf+TbDz7QJk=
-golang.org/x/term v0.22.0/go.mod h1:F3qCibpT5AMpCRfhfT53vVJwhLtIVHhB9XDjfFvnMI4=
+golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
+golang.org/x/term v0.8.0/go.mod h1:xPskH00ivmX89bAKVGSKKtLOWNx2+17Eiy94tnKShWo=
+golang.org/x/term v0.12.0/go.mod h1:owVbMEjm3cBLCHdkQu9b1opXd4ETQWc3BhuQGKgXgvU=
+golang.org/x/term v0.17.0/go.mod h1:lLRBjIVuehSbZlaOtGMbcMncT+aqLLLmKrsjNrUguwk=
+golang.org/x/term v0.20.0/go.mod h1:8UkIAJTvZgivsXaD6/pH6U9ecQzZ45awqEOzuCvwpFY=
+golang.org/x/term v0.27.0/go.mod h1:iMsnZpn0cago0GOrHO2+Y7u7JPn5AylBrcoWkElMTSM=
+golang.org/x/term v0.32.0 h1:DR4lr0TjUs3epypdhTOkMmuF5CDFJ/8pOnbzMZPQ7bg=
+golang.org/x/term v0.32.0/go.mod h1:uZG1FhGx848Sqfsq4/DlJr3xGGsYMu/L5GW4abiaEPQ=
 golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
-golang.org/x/text v0.4.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
-golang.org/x/text v0.16.0 h1:a94ExnEXNtEwYLGJSIUxnWoxoRz/ZcCsV63ROupILh4=
-golang.org/x/text v0.16.0/go.mod h1:GhwF1Be+LQoKShO3cGOHzqOgRrGaYc9AvblQOmPVHnI=
+golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
+golang.org/x/text v0.9.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
+golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
+golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
+golang.org/x/text v0.15.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
+golang.org/x/text v0.21.0/go.mod h1:4IBbMaMmOPCJ8SecivzSH54+73PCFmPWxNTLm+vZkEQ=
+golang.org/x/text v0.25.0 h1:qVyWApTSYLk/drJRO5mDlNYskwQznZmkpV2c8q9zls4=
+golang.org/x/text v0.25.0/go.mod h1:WEdwpYrmk1qmdHvhkSTNPm3app7v4rsT8F2UD6+VHIA=
 golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20191024005414-555d28b269f0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
@@ -485,8 +552,11 @@ golang.org/x/tools v0.0.0-20200804011535-6c149bb5ef0d/go.mod h1:njjCfa9FT2d7l9Bc
 golang.org/x/tools v0.0.0-20200825202427-b303f430e36d/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA=
 golang.org/x/tools v0.0.0-20210106214847-113979e3529a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
-golang.org/x/tools v0.21.1-0.20240508182429-e35e4ccd0d2d h1:vU5i/LfpvrRCpgM/VPfJLg5KjxD3E+hfT1SH+d9zLwg=
+golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
+golang.org/x/tools v0.13.0/go.mod h1:HvlwmtVNQAhOuCjW7xxvovg8wbNq7LwfXh/k7wXUl58=
 golang.org/x/tools v0.21.1-0.20240508182429-e35e4ccd0d2d/go.mod h1:aiJjzUbINMkxbQROHiO6hDPo2LHcIPhhQsa9DLh0yGk=
+golang.org/x/tools v0.27.0 h1:qEKojBykQkQ4EynWy4S8Weg69NumxKdn40Fce3uc/8o=
+golang.org/x/tools v0.27.0/go.mod h1:sUi0ZgbwW9ZPAq26Ekut+weQPR5eIM6GQLQ1Yjm1H0Q=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
@@ -544,8 +614,8 @@ google.golang.org/genproto v0.0.0-20200804131852-c06518451d9c/go.mod h1:FWY/as6D
 google.golang.org/genproto v0.0.0-20200825200019-8632dd797987/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto/googleapis/api v0.0.0-20240227224415-6ceb2ff114de h1:jFNzHPIeuzhdRwVhbZdiym9q0ory/xY3sA+v2wPg8I0=
 google.golang.org/genproto/googleapis/api v0.0.0-20240227224415-6ceb2ff114de/go.mod h1:5iCWqnniDlqZHrd3neWVTOwvh/v6s3232omMecelax8=
-google.golang.org/genproto/googleapis/rpc v0.0.0-20240415180920-8c6c420018be h1:LG9vZxsWGOmUKieR8wPAUR3u3MpnYFQZROPIMaXh7/A=
-google.golang.org/genproto/googleapis/rpc v0.0.0-20240415180920-8c6c420018be/go.mod h1:WtryC6hu0hhx87FDGxWCDptyssuo68sk10vYjF+T9fY=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20240903143218-8af14fe29dc1 h1:pPJltXNxVzT4pK9yD8vR9X75DaWYYmLGMsEvBfFQZzQ=
+google.golang.org/genproto/googleapis/rpc v0.0.0-20240903143218-8af14fe29dc1/go.mod h1:UqMtugtsSgubUsoxbuAoiCXvqvErP7Gf0so0mK9tHxU=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
 google.golang.org/grpc v1.21.1/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
@@ -558,8 +628,8 @@ google.golang.org/grpc v1.28.0/go.mod h1:rpkK4SK4GF4Ach/+MFLZUBavHOvF2JJB5uozKKa
 google.golang.org/grpc v1.29.1/go.mod h1:itym6AZVZYACWQqET3MqgPpjcuV5QH3BxFS3IjizoKk=
 google.golang.org/grpc v1.30.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
 google.golang.org/grpc v1.31.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
-google.golang.org/grpc v1.63.2 h1:MUeiw1B2maTVZthpU5xvASfTh3LDbxHd6IJ6QQVU+xM=
-google.golang.org/grpc v1.63.2/go.mod h1:WAX/8DgncnokcFUldAxq7GeB5DXHDbMF+lLvDomNkRA=
+google.golang.org/grpc v1.67.0 h1:IdH9y6PF5MPSdAntIcpjQ+tXO41pcQsfZV2RxtQgVcw=
+google.golang.org/grpc v1.67.0/go.mod h1:1gLDyUQU7CTLJI90u3nXZ9ekeghjeM7pTDZlqFNg2AA=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
@@ -570,8 +640,8 @@ google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2
 google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
 google.golang.org/protobuf v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGjtUeSXeh4=
 google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
-google.golang.org/protobuf v1.33.0 h1:uNO2rsAINq/JlFpSdYEKIZ0uKD/R9cpdv0T+yoGwGmI=
-google.golang.org/protobuf v1.33.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
+google.golang.org/protobuf v1.34.2 h1:6xV6lTsCfpGD21XK49h7MhtcApnLqkfYgPcdHftf6hg=
+google.golang.org/protobuf v1.34.2/go.mod h1:qYOHts0dSfpeUzUFpOMr/WGzszTmLH+DiWniOlNbLDw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
@@ -591,8 +661,8 @@ honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWh
 honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
 honnef.co/go/tools v0.0.1-2020.1.3/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
 honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
-mvdan.cc/sh/v3 v3.8.0 h1:ZxuJipLZwr/HLbASonmXtcvvC9HXY9d2lXZHnKGjFc8=
-mvdan.cc/sh/v3 v3.8.0/go.mod h1:w04623xkgBVo7/IUK89E0g8hBykgEpN0vgOj3RJr6MY=
+mvdan.cc/sh/v3 v3.11.0 h1:q5h+XMDRfUGUedCqFFsjoFjrhwf2Mvtt1rkMvVz0blw=
+mvdan.cc/sh/v3 v3.11.0/go.mod h1:LRM+1NjoYCzuq/WZ6y44x14YNAI0NK7FLPeQSaFagGg=
 rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
 rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
 rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=

internal/errwrap/wrap.go

@@ -21,7 +21,7 @@ func Wrap(err error, msg string) error {
 	chunks := strings.Split(frame.Function, "/")
 	withCaller := fmt.Sprintf("%s: %s", chunks[len(chunks)-1], msg)
 	if err == nil {
-		return fmt.Errorf(withCaller)
+		return errors.New(withCaller)
 	}
 	return fmt.Errorf("%s: %w", withCaller, err)
 }

internal/storage/azure/azure.go

@@ -9,6 +9,7 @@ import (
 	"errors"
 	"fmt"
 	"os"
+	"path"
 	"path/filepath"
 	"strings"
 	"sync"
@@ -128,7 +129,7 @@ func (b *azureBlobStorage) Copy(file string) error {
 	_, err = b.client.UploadStream(
 		context.Background(),
 		b.containerName,
-		filepath.Join(b.DestinationPath, filepath.Base(file)),
+		path.Join(b.DestinationPath, filepath.Base(file)),
 		fileReader,
 		b.uploadStreamOptions,
 	)
@@ -141,7 +142,7 @@ func (b *azureBlobStorage) Copy(file string) error {
 // Prune rotates away backups according to the configuration and provided
 // deadline for the Azure Blob storage backend.
 func (b *azureBlobStorage) Prune(deadline time.Time, pruningPrefix string) (*storage.PruneStats, error) {
-	lookupPrefix := filepath.Join(b.DestinationPath, pruningPrefix)
+	lookupPrefix := path.Join(b.DestinationPath, pruningPrefix)
 	pager := b.client.NewListBlobsFlatPager(b.containerName, &container.ListBlobsFlatOptions{
 		Prefix: &lookupPrefix,
 	})

internal/storage/dropbox/dropbox.go

@@ -7,7 +7,6 @@ import (
 	"net/url"
 	"os"
 	"path"
-	"path/filepath"
 	"strings"
 	"sync"
 	"time"
@@ -195,7 +194,7 @@ loop:
 	_, err = b.client.UploadSessionFinish(
 		files.NewUploadSessionFinishArg(
 			files.NewUploadSessionCursor(sessionId, 0),
-			files.NewCommitInfo(filepath.Join(b.DestinationPath, name)),
+			files.NewCommitInfo(path.Join(b.DestinationPath, name)),
 		), nil)
 	if err != nil {
 		return errwrap.Wrap(err, "error finishing the upload session")
@@ -247,7 +246,7 @@ func (b *dropboxStorage) Prune(deadline time.Time, pruningPrefix string) (*stora
 
 	pruneErr := b.DoPrune(b.Name(), len(matches), lenCandidates, deadline, func() error {
 		for _, match := range matches {
-			if _, err := b.client.DeleteV2(files.NewDeleteArg(filepath.Join(b.DestinationPath, match.Name))); err != nil {
+			if _, err := b.client.DeleteV2(files.NewDeleteArg(path.Join(b.DestinationPath, match.Name))); err != nil {
 				return errwrap.Wrap(err, "error removing file from Dropbox storage")
 			}
 		}

internal/storage/local/local.go

@@ -96,7 +96,7 @@ func (b *localStorage) Prune(deadline time.Time, pruningPrefix string) (*storage
 			)
 		}
 
-		if fi.Mode()&os.ModeSymlink != os.ModeSymlink {
+		if !fi.IsDir() && fi.Mode()&os.ModeSymlink != os.ModeSymlink {
 			candidates = append(candidates, candidate)
 		}
 	}

internal/storage/s3/s3.go

@@ -10,7 +10,6 @@ import (
 	"fmt"
 	"os"
 	"path"
-	"path/filepath"
 	"time"
 
 	"github.com/minio/minio-go/v7"
@@ -124,7 +123,7 @@ func (b *s3Storage) Copy(file string) error {
 		putObjectOptions.PartSize = uint64(partSize)
 	}
 
-	if _, err := b.client.FPutObject(context.Background(), b.bucket, filepath.Join(b.DestinationPath, name), file, putObjectOptions); err != nil {
+	if _, err := b.client.FPutObject(context.Background(), b.bucket, path.Join(b.DestinationPath, name), file, putObjectOptions); err != nil {
 		if errResp := minio.ToErrorResponse(err); errResp.Message != "" {
 			return errwrap.Wrap(
 				nil,
@@ -147,7 +146,7 @@ func (b *s3Storage) Copy(file string) error {
 // Prune rotates away backups according to the configuration and provided deadline for the S3/Minio storage backend.
 func (b *s3Storage) Prune(deadline time.Time, pruningPrefix string) (*storage.PruneStats, error) {
 	candidates := b.client.ListObjects(context.Background(), b.bucket, minio.ListObjectsOptions{
-		Prefix:    filepath.Join(b.DestinationPath, pruningPrefix),
+		Prefix:    path.Join(b.DestinationPath, pruningPrefix),
 		Recursive: true,
 	})
 

internal/storage/ssh/ssh.go

@@ -8,7 +8,6 @@ import (
 	"io"
 	"os"
 	"path"
-	"path/filepath"
 	"strings"
 	"time"
 
@@ -115,7 +114,7 @@ func (b *sshStorage) Copy(file string) error {
 	}
 	defer source.Close()
 
-	destination, err := b.sftpClient.Create(filepath.Join(b.DestinationPath, name))
+	destination, err := b.sftpClient.Create(path.Join(b.DestinationPath, name))
 	if err != nil {
 		return errwrap.Wrap(err, "error creating file")
 	}
@@ -164,24 +163,28 @@ func (b *sshStorage) Prune(deadline time.Time, pruningPrefix string) (*storage.P
 	}
 
 	var matches []string
+	var numCandidates int
 	for _, candidate := range candidates {
-		if !strings.HasPrefix(candidate.Name(), pruningPrefix) {
+		if candidate.IsDir() || !strings.HasPrefix(candidate.Name(), pruningPrefix) {
 			continue
 		}
+
+		numCandidates++
 		if candidate.ModTime().Before(deadline) {
 			matches = append(matches, candidate.Name())
 		}
 	}
 
 	stats := &storage.PruneStats{
-		Total:  uint(len(candidates)),
+		Total:  uint(numCandidates),
 		Pruned: uint(len(matches)),
 	}
 
-	pruneErr := b.DoPrune(b.Name(), len(matches), len(candidates), deadline, func() error {
+	pruneErr := b.DoPrune(b.Name(), len(matches), numCandidates, deadline, func() error {
 		for _, match := range matches {
-			if err := b.sftpClient.Remove(filepath.Join(b.DestinationPath, match)); err != nil {
-				return errwrap.Wrap(err, "error removing file")
+			p := path.Join(b.DestinationPath, match)
+			if err := b.sftpClient.Remove(p); err != nil {
+				return errwrap.Wrap(err, fmt.Sprintf("error removing file %s", p))
 			}
 		}
 		return nil

internal/storage/webdav/webdav.go

@@ -9,7 +9,6 @@ import (
 	"net/http"
 	"os"
 	"path"
-	"path/filepath"
 	"strings"
 	"time"
 
@@ -77,7 +76,7 @@ func (b *webDavStorage) Copy(file string) error {
 		return errwrap.Wrap(err, "error opening the file to be uploaded")
 	}
 
-	if err := b.client.WriteStream(filepath.Join(b.DestinationPath, name), r, 0644); err != nil {
+	if err := b.client.WriteStream(path.Join(b.DestinationPath, name), r, 0644); err != nil {
 		return errwrap.Wrap(err, "error uploading the file")
 	}
 	b.Log(storage.LogLevelInfo, b.Name(), "Uploaded a copy of backup '%s' to '%s' at path '%s'.", file, b.url, b.DestinationPath)
@@ -91,26 +90,27 @@ func (b *webDavStorage) Prune(deadline time.Time, pruningPrefix string) (*storag
 	if err != nil {
 		return nil, errwrap.Wrap(err, "error looking up candidates from remote storage")
 	}
+
 	var matches []fs.FileInfo
-	var lenCandidates int
+	var numCandidates int
 	for _, candidate := range candidates {
-		if !strings.HasPrefix(candidate.Name(), pruningPrefix) {
+		if candidate.IsDir() || !strings.HasPrefix(candidate.Name(), pruningPrefix) {
 			continue
 		}
-		lenCandidates++
+		numCandidates++
 		if candidate.ModTime().Before(deadline) {
 			matches = append(matches, candidate)
 		}
 	}
 
 	stats := &storage.PruneStats{
-		Total:  uint(lenCandidates),
+		Total:  uint(numCandidates),
 		Pruned: uint(len(matches)),
 	}
 
-	pruneErr := b.DoPrune(b.Name(), len(matches), lenCandidates, deadline, func() error {
+	pruneErr := b.DoPrune(b.Name(), len(matches), numCandidates, deadline, func() error {
 		for _, match := range matches {
-			if err := b.client.Remove(filepath.Join(b.DestinationPath, match.Name())); err != nil {
+			if err := b.client.Remove(path.Join(b.DestinationPath, match.Name())); err != nil {
 				return errwrap.Wrap(err, "error removing file")
 			}
 		}

test/Dockerfile

@@ -1,9 +1,12 @@
-FROM docker:27-dind
+FROM docker:28-dind
 
 RUN apk add \
+  age \
   coreutils \
   curl \
+  expect \
   gpg \
+  gpg-agent \
   jq \
   moreutils \
   tar \

test/README.md

@@ -39,14 +39,6 @@ Setting this value lets you run tests against different existing images, so you
 IMAGE_TAG=v2.30.0 ./test.sh
 ```
 
-#### `NO_IMAGE_CACHE`
-
-When set, images from remote registries will not be cached and shared between sandbox containers.
-
-```sh
-NO_IMAGE_CACHE=1 ./test.sh
-```
-
 By default, two local images are created that persist the image data and provide it to containers at runtime.
 
 ## Understanding the test setup
@@ -68,3 +60,18 @@ cd "$(dirname "$0")"
 . ../util.sh
 current_test=$(basename $(pwd))
 ```
+
+### Running tests in swarm mode
+
+A test case can signal it wants to run in swarm mode by placing an empty `.swarm` file inside the directory.
+In case the swarm setup should be compose of multiple nodes, a `.multinode` file can be used.
+
+A multinode setup will contain one manager (`manager`) and two worker nodes (`worker1` and `worker2`).
+
+If a test is expected to run in the context of a node other than the `manager`, the hostname can be put in the `.multinode` file.
+
+> [!IMPORTANT]
+> When running against a multi-node setup and targeting a non-manager node, the test script will automatically deploy a stack named `test_stack` based on the compose file in the test directory.
+> This is required because the non-manager node cannot deploy the stack itself from within the test script.
+> This also means, you cannot mount local directories created in your test script, as the containers are already created when the script runs.
+> You can work around this limitation by creating named volumes and then `docker cp`ing the contents your test needs to inspect.

test/age-passphrase/docker-compose.yml

@@ -0,0 +1,24 @@
+services:
+  backup:
+    image: offen/docker-volume-backup:${TEST_VERSION:-canary}
+    restart: always
+    environment:
+      BACKUP_CRON_EXPRESSION: 0 0 5 31 2 ?
+      BACKUP_FILENAME: test.tar.gz
+      BACKUP_LATEST_SYMLINK: test-latest.tar.gz.age
+      BACKUP_RETENTION_DAYS: ${BACKUP_RETENTION_DAYS:-7}
+      AGE_PASSPHRASE: "Dance.0Tonight.Go.Typical"
+    volumes:
+      - ${LOCAL_DIR:-./local}:/archive
+      - app_data:/backup/app_data:ro
+      - /var/run/docker.sock:/var/run/docker.sock:ro
+
+  offen:
+    image: offen/offen:latest
+    labels:
+      - docker-volume-backup.stop-during-backup=true
+    volumes:
+      - app_data:/var/opt/offen
+
+volumes:
+  app_data:

test/age-passphrase/run.sh

@@ -0,0 +1,39 @@
+#!/bin/sh
+
+set -e
+
+cd "$(dirname "$0")"
+. ../util.sh
+current_test=$(basename "$(pwd)")
+
+export LOCAL_DIR="$(mktemp -d)"
+
+docker compose up -d --quiet-pull
+sleep 5
+
+docker compose exec backup backup
+
+expect_running_containers "2"
+
+TMP_DIR=$(mktemp -d)
+
+# complex usage of expect(1) due to age not have a way to programmatically
+# provide the passphrase
+expect -i <<EOL
+spawn age --decrypt -o "$LOCAL_DIR/decrypted.tar.gz" "$LOCAL_DIR/test.tar.gz.age"
+expect -exact "Enter passphrase: "
+send -- "Dance.0Tonight.Go.Typical\r"
+sleep 1
+EOL
+tar -xf "$LOCAL_DIR/decrypted.tar.gz" -C "$TMP_DIR"
+
+if [ ! -f "$TMP_DIR/backup/app_data/offen.db" ]; then
+  fail "Could not find expected file in untared archive."
+fi
+rm -vf "$LOCAL_DIR/decrypted.tar.gz"
+
+pass "Found relevant files in decrypted and untared local backup."
+
+if [ ! -L "$LOCAL_DIR/test-latest.tar.gz.age" ]; then
+  fail "Could not find local symlink to latest encrypted backup."
+fi

test/age-publickey/.gitignore

@@ -0,0 +1 @@
+pk-*.txt

test/age-publickey/docker-compose.yml

@@ -0,0 +1,24 @@
+services:
+  backup:
+    image: offen/docker-volume-backup:${TEST_VERSION:-canary}
+    restart: always
+    environment:
+      BACKUP_CRON_EXPRESSION: 0 0 5 31 2 ?
+      BACKUP_FILENAME: test.tar.gz
+      BACKUP_LATEST_SYMLINK: test-latest.tar.gz.age
+      BACKUP_RETENTION_DAYS: ${BACKUP_RETENTION_DAYS:-7}
+      AGE_PUBLIC_KEYS: "${BACKUP_AGE_PUBLIC_KEYS}"
+    volumes:
+      - ${LOCAL_DIR:-./local}:/archive
+      - app_data:/backup/app_data:ro
+      - /var/run/docker.sock:/var/run/docker.sock:ro
+
+  offen:
+    image: offen/offen:latest
+    labels:
+      - docker-volume-backup.stop-during-backup=true
+    volumes:
+      - app_data:/var/opt/offen
+
+volumes:
+  app_data:

test/age-publickey/run.sh

@@ -0,0 +1,47 @@
+#!/bin/sh
+
+set -e
+
+cd "$(dirname "$0")"
+. ../util.sh
+current_test=$(basename "$(pwd)")
+
+export LOCAL_DIR="$(mktemp -d)"
+
+age-keygen >"$LOCAL_DIR/pk-a.txt"
+PK_A="$(grep -E 'public key' <"$LOCAL_DIR/pk-a.txt" | cut -d: -f2 | xargs)"
+age-keygen >"$LOCAL_DIR/pk-b.txt"
+PK_B="$(grep -E 'public key' <"$LOCAL_DIR/pk-b.txt" | cut -d: -f2 | xargs)"
+
+ssh-keygen -t ed25519 -m pem -f "$LOCAL_DIR/id_ed25519" -C "docker-volume-backup@local"
+PK_C="$(cat $LOCAL_DIR/id_ed25519.pub)"
+
+export BACKUP_AGE_PUBLIC_KEYS="$PK_A,$PK_B,$PK_C"
+
+docker compose up -d --quiet-pull
+sleep 5
+
+docker compose exec backup backup
+
+expect_running_containers "2"
+
+do_decrypt() {
+  TMP_DIR=$(mktemp -d)
+  age --decrypt -i "$1" -o "$LOCAL_DIR/decrypted.tar.gz" "$LOCAL_DIR/test.tar.gz.age"
+  tar -xf "$LOCAL_DIR/decrypted.tar.gz" -C "$TMP_DIR"
+
+  if [ ! -f "$TMP_DIR/backup/app_data/offen.db" ]; then
+    fail "Could not find expected file in untared archive."
+  fi
+  rm -vf "$LOCAL_DIR/decrypted.tar.gz"
+
+  pass "Found relevant files in decrypted and untared local backup."
+
+  if [ ! -L "$LOCAL_DIR/test-latest.tar.gz.age" ]; then
+    fail "Could not find local symlink to latest encrypted backup."
+  fi
+}
+
+do_decrypt "$LOCAL_DIR/pk-a.txt"
+do_decrypt "$LOCAL_DIR/pk-b.txt"
+do_decrypt "$LOCAL_DIR/id_ed25519"

test/azure/docker-compose.yml

@@ -1,6 +1,6 @@
 services:
   storage:
-    image: mcr.microsoft.com/azure-storage/azurite:3.31.0
+    image: mcr.microsoft.com/azure-storage/azurite:3.34.0
     volumes:
       - ${DATA_DIR:-./data}:/data
     command: azurite-blob --blobHost 0.0.0.0 --blobPort 10000 --location /data
@@ -10,7 +10,7 @@ services:
       retries: 30
 
   az_cli:
-    image: mcr.microsoft.com/azure-cli:2.51.0
+    image: mcr.microsoft.com/azure-cli:2.71.0
     volumes:
       - ${LOCAL_DIR:-./local}:/dump
     command:
@@ -42,7 +42,7 @@ services:
       BACKUP_PRUNING_PREFIX: test
     volumes:
       - app_data:/backup/app_data:ro
-      - /var/run/docker.sock:/var/run/docker.sock
+      - /var/run/docker.sock:/var/run/docker.sock:ro
 
   offen:
     image: offen/offen:latest

test/certs/docker-compose.yml

@@ -30,7 +30,7 @@ services:
       BACKUP_PRUNING_LEEWAY: 5s
     volumes:
       - app_data:/backup/app_data:ro
-      - /var/run/docker.sock:/var/run/docker.sock
+      - /var/run/docker.sock:/var/run/docker.sock:ro
       - ${CERT_DIR:-.}/rootCA.crt:/root/minio-rootCA.crt
 
   offen:

test/cli/run.sh

@@ -37,7 +37,7 @@ docker run --rm -q \
   --network test_network \
   -v app_data:/backup/app_data \
   -v empty_data:/backup/empty_data \
-  -v /var/run/docker.sock:/var/run/docker.sock \
+  -v /var/run/docker.sock:/var/run/docker.sock:ro \
   --env AWS_ACCESS_KEY_ID=test \
   --env AWS_SECRET_ACCESS_KEY=GMusLtUmILge2by+z890kQ \
   --env AWS_ENDPOINT=minio:9000 \

test/collision/docker-compose.yml

@@ -9,7 +9,7 @@ services:
     volumes:
       - offen_data:/backup/offen_data:ro
       - ${LOCAL_DIR:-./local}:/archive
-      - /var/run/docker.sock:/var/run/docker.sock
+      - /var/run/docker.sock:/var/run/docker.sock:ro
 
   offen:
     image: offen/offen:latest

test/collision/run.sh

@@ -8,8 +8,6 @@ current_test=$(basename $(pwd))
 
 export LOCAL_DIR=$(mktemp -d)
 
-docker swarm init
-
 docker stack deploy --compose-file=docker-compose.yml test_stack
 
 while [ -z $(docker ps -q -f name=backup) ]; do

test/commands/docker-compose.yml

@@ -42,7 +42,7 @@ services:
     volumes:
       - ${LOCAL_DIR:-./local}:/archive
       - app_data:/backup/data:ro
-      - /var/run/docker.sock:/var/run/docker.sock
+      - /var/run/docker.sock:/var/run/docker.sock:ro
 
 volumes:
   app_data:

test/confd/docker-compose.yml

@@ -12,7 +12,7 @@ services:
       - ./01backup.env:/etc/dockervolumebackup/conf.d/01backup.env
       - ./02backup.env:/etc/dockervolumebackup/conf.d/02backup.env
       - ./03never.env:/etc/dockervolumebackup/conf.d/03never.env
-      - /var/run/docker.sock:/var/run/docker.sock
+      - /var/run/docker.sock:/var/run/docker.sock:ro
 
   offen:
     image: offen/offen:latest

test/docker-compose.yml

@@ -0,0 +1,30 @@
+services:
+  manager: &node
+    hostname: manager
+    privileged: true
+    image: offen/docker-volume-backup:test-sandbox
+    healthcheck:
+      test: ["CMD", "docker", "info"]
+      interval: 1s
+      timeout: 5s
+      retries: 50
+    volumes:
+      - ./:/code
+      - ${TARBALL:-.}:/cache/image.tar.gz
+      - docker_volume_backup_test_sandbox_image:/var/lib/docker/image
+      - docker_volume_backup_test_sandbox_overlay2:/var/lib/docker/overlay2
+
+  worker1:
+    <<: *node
+    hostname: worker1
+    profiles:
+      - multinode
+  worker2:
+    <<: *node
+    hostname: worker2
+    profiles:
+      - multinode
+
+volumes:
+  docker_volume_backup_test_sandbox_image:
+  docker_volume_backup_test_sandbox_overlay2:

test/dropbox/docker-compose.yml

@@ -42,7 +42,7 @@ services:
       DROPBOX_CONCURRENCY_LEVEL: 6
     volumes:
       - app_data:/backup/app_data:ro
-      - /var/run/docker.sock:/var/run/docker.sock
+      - /var/run/docker.sock:/var/run/docker.sock:ro
 
   offen:
     image: offen/offen:latest

test/extend/docker-compose.yml

@@ -11,7 +11,7 @@ services:
     volumes:
       - ${LOCAL_DIR:-local}:/local
       - app_data:/backup/app_data:ro
-      - /var/run/docker.sock:/var/run/docker.sock
+      - /var/run/docker.sock:/var/run/docker.sock:ro
 
   offen:
     image: offen/offen:latest

test/gpg-asym/docker-compose.yml

@@ -0,0 +1,25 @@
+services:
+  backup:
+    image: offen/docker-volume-backup:${TEST_VERSION:-canary}
+    restart: always
+    environment:
+      BACKUP_CRON_EXPRESSION: 0 0 5 31 2 ?
+      BACKUP_FILENAME: test.tar.gz
+      BACKUP_LATEST_SYMLINK: test-latest.tar.gz.gpg
+      BACKUP_RETENTION_DAYS: ${BACKUP_RETENTION_DAYS:-7}
+      GPG_PUBLIC_KEY_RING_FILE: /keys/public_key.asc
+    volumes:
+      - ${KEY_DIR:-.}/public_key.asc:/keys/public_key.asc
+      - ${LOCAL_DIR:-./local}:/archive
+      - app_data:/backup/app_data:ro
+      - /var/run/docker.sock:/var/run/docker.sock:ro
+
+  offen:
+    image: offen/offen:latest
+    labels:
+      - docker-volume-backup.stop-during-backup=true
+    volumes:
+      - app_data:/var/opt/offen
+
+volumes:
+  app_data:

test/gpg-asym/run.sh

@@ -0,0 +1,49 @@
+#!/bin/sh
+
+set -e
+
+cd "$(dirname "$0")"
+. ../util.sh
+current_test=$(basename $(pwd))
+
+export LOCAL_DIR=$(mktemp -d)
+
+export KEY_DIR=$(mktemp -d)
+
+export PASSPHRASE="test"
+
+gpg --batch --gen-key <<EOF
+Key-Type: RSA
+Key-Length: 4096
+Name-Real: offen
+Name-Email: docker-volume-backup@local
+Expire-Date: 0
+Passphrase: $PASSPHRASE
+%commit
+EOF
+
+gpg --export --armor --batch --yes --pinentry-mode loopback --passphrase $PASSPHRASE --output $KEY_DIR/public_key.asc
+
+docker compose up -d --quiet-pull
+sleep 5
+
+docker compose exec backup backup
+
+expect_running_containers "2"
+
+TMP_DIR=$(mktemp -d)
+
+gpg -d --pinentry-mode loopback --yes --passphrase $PASSPHRASE "$LOCAL_DIR/test.tar.gz.gpg" > "$LOCAL_DIR/decrypted.tar.gz"
+
+tar -xf "$LOCAL_DIR/decrypted.tar.gz" -C $TMP_DIR
+
+if [ ! -f $TMP_DIR/backup/app_data/offen.db ]; then
+  fail "Could not find expected file in untared archive."
+fi
+rm "$LOCAL_DIR/decrypted.tar.gz"
+
+pass "Found relevant files in decrypted and untared local backup."
+
+if [ ! -L "$LOCAL_DIR/test-latest.tar.gz.gpg" ]; then
+  fail "Could not find local symlink to latest encrypted backup."
+fi

test/gpg/docker-compose.yml

@@ -11,7 +11,7 @@ services:
     volumes:
       - ${LOCAL_DIR:-./local}:/archive
       - app_data:/backup/app_data:ro
-      - /var/run/docker.sock:/var/run/docker.sock
+      - /var/run/docker.sock:/var/run/docker.sock:ro
 
   offen:
     image: offen/offen:latest

test/local/docker-compose.yml

@@ -13,7 +13,7 @@ services:
       BACKUP_PRUNING_PREFIX: test
     volumes:
       - app_data:/backup/app_data:ro
-      - /var/run/docker.sock:/var/run/docker.sock
+      - /var/run/docker.sock:/var/run/docker.sock:ro
       - ${LOCAL_DIR:-./local}:/archive
 
   offen:

test/lock/docker-compose.yml

@@ -7,7 +7,7 @@ services:
       BACKUP_RETENTION_DAYS: '7'
     volumes:
       - app_data:/backup/app_data:ro
-      - /var/run/docker.sock:/var/run/docker.sock
+      - /var/run/docker.sock:/var/run/docker.sock:ro
       - ${LOCAL_DIR:-./local}:/archive
 
   offen:

test/pgzip/run.sh

@@ -23,7 +23,7 @@ docker run --rm -q \
   --network test_network \
   -v app_data:/backup/app_data \
   -v $LOCAL_DIR:/archive \
-  -v /var/run/docker.sock:/var/run/docker.sock \
+  -v /var/run/docker.sock:/var/run/docker.sock:ro \
   --env BACKUP_COMPRESSION=gz \
   --env GZIP_PARALLELISM=0 \
   --env BACKUP_FILENAME='test.{{ .Extension }}' \

test/proxy/docker-compose.swarm.yml

@@ -22,7 +22,7 @@ services:
       TASKS: ${ALLOW_TASKS:-1}
       NODES: ${ALLOW_NODES:-1}
     volumes:
-      - /var/run/docker.sock:/var/run/docker.sock
+      - /var/run/docker.sock:/var/run/docker.sock:ro
 
   pg:
     image: postgres:14-alpine

test/proxy/docker-compose.yml

@@ -19,7 +19,7 @@ services:
       CONTAINERS: ${ALLOW_CONTAINERS:-1}
       POST: ${ALLOW_POST:-1}
     volumes:
-      - /var/run/docker.sock:/var/run/docker.sock
+      - /var/run/docker.sock:/var/run/docker.sock:ro
 
   pg:
     image: postgres:14-alpine

test/pruning/docker-compose.yml

@@ -32,7 +32,7 @@ services:
       BACKUP_SKIP_BACKENDS_FROM_PRUNE: 's3'
     volumes:
       - app_data:/backup/app_data:ro
-      - /var/run/docker.sock:/var/run/docker.sock
+      - /var/run/docker.sock:/var/run/docker.sock:ro
       - ${LOCAL_DIR:-./local}:/archive
 
   offen:

test/s3/docker-compose.yml

@@ -30,7 +30,7 @@ services:
       BACKUP_PRUNING_PREFIX: test
     volumes:
       - app_data:/backup/app_data:ro
-      - /var/run/docker.sock:/var/run/docker.sock
+      - /var/run/docker.sock:/var/run/docker.sock:ro
 
   offen:
     image: offen/offen:latest

test/secrets/docker-compose.yml

@@ -35,7 +35,7 @@ services:
       BACKUP_PRUNING_LEEWAY: 5s
     volumes:
       - pg_data:/backup/pg_data:ro
-      - /var/run/docker.sock:/var/run/docker.sock
+      - /var/run/docker.sock:/var/run/docker.sock:ro
     secrets:
       - minio_root_user
       - minio_root_password

test/secrets/run.sh

@@ -6,8 +6,6 @@ cd $(dirname $0)
 . ../util.sh
 current_test=$(basename $(pwd))
 
-docker swarm init
-
 printf "test" | docker secret create minio_root_user -
 printf "GMusLtUmILge2by+z890kQ" | docker secret create minio_root_password -
 

test/services/docker-compose.yml

@@ -29,7 +29,7 @@ services:
       BACKUP_PRUNING_LEEWAY: 5s
     volumes:
       - pg_data:/backup/pg_data:ro
-      - /var/run/docker.sock:/var/run/docker.sock
+      - /var/run/docker.sock:/var/run/docker.sock:ro
 
   offen:
     image: offen/offen:latest

test/services/run.sh

@@ -6,8 +6,6 @@ cd $(dirname $0)
 . ../util.sh
 current_test=$(basename $(pwd))
 
-docker swarm init
-
 docker stack deploy --compose-file=docker-compose.yml test_stack
 
 while [ -z $(docker ps -q -f name=backup) ]; do

test/ssh/docker-compose.yml

@@ -30,7 +30,7 @@ services:
     volumes:
       - ${KEY_DIR:-.}/id_rsa:/root/.ssh/id_rsa
       - app_data:/backup/app_data:ro
-      - /var/run/docker.sock:/var/run/docker.sock
+      - /var/run/docker.sock:/var/run/docker.sock:ro
 
   offen:
     image: offen/offen:latest

test/swarm/docker-compose.yml

@@ -35,7 +35,7 @@ services:
       BACKUP_PRUNING_LEEWAY: 5s
     volumes:
       - pg_data:/backup/pg_data:ro
-      - /var/run/docker.sock:/var/run/docker.sock
+      - /var/run/docker.sock:/var/run/docker.sock:ro
 
   offen:
     image: offen/offen:latest

test/swarm/run.sh

@@ -6,8 +6,6 @@ cd $(dirname $0)
 . ../util.sh
 current_test=$(basename $(pwd))
 
-docker swarm init
-
 docker stack deploy --compose-file=docker-compose.yml test_stack
 
 while [ -z $(docker ps -q -f name=backup) ]; do

test/tar/docker-compose.yml

@@ -0,0 +1,21 @@
+services:
+  backup:
+    image: offen/docker-volume-backup:${TEST_VERSION:-canary}
+    restart: always
+    environment:
+      BACKUP_FILENAME: test.{{ .Extension }}
+      BACKUP_COMPRESSION: none
+    volumes:
+      - app_data:/backup/app_data:ro
+      - /var/run/docker.sock:/var/run/docker.sock:ro
+      - ${LOCAL_DIR:-./local}:/archive
+
+  offen:
+    image: offen/offen:latest
+    labels:
+      - docker-volume-backup.stop-during-backup=true
+    volumes:
+      - app_data:/var/opt/offen
+
+volumes:
+  app_data:

test/tar/run.sh

@@ -0,0 +1,25 @@
+#!/bin/sh
+
+set -e
+
+cd "$(dirname "$0")"
+. ../util.sh
+current_test=$(basename $(pwd))
+
+export LOCAL_DIR=$(mktemp -d)
+
+docker compose up -d --quiet-pull
+sleep 5
+
+docker compose exec backup backup
+
+sleep 5
+
+expect_running_containers "2"
+
+tmp_dir=$(mktemp -d)
+tar -xvf "$LOCAL_DIR/test.tar" -C $tmp_dir
+if [ ! -f "$tmp_dir/backup/app_data/offen.db" ]; then
+  fail "Could not find expected file in untared archive."
+fi
+pass "Expected file was found."

test/test.sh

@@ -7,17 +7,13 @@ IMAGE_TAG=${IMAGE_TAG:-canary}
 
 sandbox="docker_volume_backup_test_sandbox"
 tarball="$(mktemp -d)/image.tar.gz"
+compose_profile="default"
 
 trap finish EXIT INT TERM
 
 finish () {
   rm -rf $(dirname $tarball)
-  if [ ! -z $(docker ps -aq --filter=name=$sandbox) ]; then
-    docker rm -f $(docker stop $sandbox)
-  fi
-  if [ ! -z $(docker volume ls -q --filter=name="^${sandbox}\$") ]; then
-    docker volume rm $sandbox
-  fi
+  docker compose --profile $compose_profile down
 }
 
 docker build -t offen/docker-volume-backup:test-sandbox .
@@ -41,41 +37,38 @@ for dir in $(find $find_args | sort); do
   echo ""
 
   test="${dir}/run.sh"
-  docker_run_args="--name "$sandbox" --detach \
-    --privileged \
-    -v $(dirname $(pwd)):/code \
-    -v $tarball:/cache/image.tar.gz \
-    -v $sandbox:/var/lib/docker"
+  export TARBALL=$tarball
+  export SOURCE=$(dirname $(pwd))
 
-  if [ -z "$NO_IMAGE_CACHE" ]; then
-    docker_run_args="$docker_run_args \
-      -v "${sandbox}_image":/var/lib/docker/image \
-      -v "${sandbox}_overlay2":/var/lib/docker/overlay2"
+  if [ -f ${dir}/.multinode ]; then
+    compose_profile="multinode"
   fi
 
-  docker run $docker_run_args offen/docker-volume-backup:test-sandbox
+  docker compose --profile $compose_profile up -d --wait
+  test_context=manager
+  if [ -f "${dir}/.multinode" ] && [ -s "${dir}/.multinode" ]; then
+    test_context=$(cat $dir/.multinode)
+    echo "Running tests on $test_context instead of manager"
+  fi
+  docker compose exec $test_context /bin/sh -c "docker load -i /cache/image.tar.gz"
 
-  retry_counter=0
-  until timeout 5 docker exec $sandbox /bin/sh -c 'docker info' > /dev/null 2>&1; do
-    if [ $retry_counter -gt 20 ]; then
-      echo "Gave up waiting for Docker daemon to become ready after 20 attempts"
-      exit 1
+  if [ -f "${dir}/.swarm" ]; then
+    docker compose exec manager docker swarm init
+  elif [ -f "${dir}/.multinode" ]; then
+    docker compose exec manager docker swarm init
+    manager_ip=$(docker compose exec manager docker node inspect $(docker compose exec manager docker node ls -q) --format '{{ .Status.Addr }}')
+    token=$(docker compose exec manager docker swarm join-token -q worker)
+    docker compose exec worker1 docker swarm join --token $token $manager_ip:2377
+    docker compose exec worker2 docker swarm join --token $token $manager_ip:2377
+
+    if [ "$test_context" != "manager" ]; then
+      docker compose exec -w "/code/$dir" manager docker stack deploy --compose-file="docker-compose.yml" test_stack
     fi
+  fi
 
-    if [ "$(docker inspect $sandbox --format '{{ .State.Running }}')" = "false" ]; then
-      docker rm $sandbox
-      docker run $docker_run_args offen/docker-volume-backup:test-sandbox
-    fi
+  docker compose exec -e TEST_VERSION=$IMAGE_TAG $test_context /bin/sh -c "/code/$test"
 
-    sleep 0.5
-    retry_counter=$((retry_counter+1))
-  done
-
-  docker exec $sandbox /bin/sh -c "docker load -i /cache/image.tar.gz"
-  docker exec -e TEST_VERSION=$IMAGE_TAG $sandbox /bin/sh -c "/code/test/$test"
-
-  docker rm $(docker stop $sandbox)
-  docker volume rm $sandbox
+  docker compose --profile $compose_profile down
   echo ""
   echo "$test passed"
   echo ""

test/user/docker-compose.yml

@@ -20,7 +20,7 @@ services:
     volumes:
       - ${LOCAL_DIR:-./local}:/archive
       - app_data:/backup/data:ro
-      - /var/run/docker.sock:/var/run/docker.sock
+      - /var/run/docker.sock:/var/run/docker.sock:ro
 
 volumes:
   app_data:

test/webdav/docker-compose.yml

@@ -28,7 +28,7 @@ services:
       WEBDAV_PASSWORD: test
     volumes:
       - app_data:/backup/app_data:ro
-      - /var/run/docker.sock:/var/run/docker.sock
+      - /var/run/docker.sock:/var/run/docker.sock:ro
 
   offen:
     image: offen/offen:latest

test/worker-node/.multinode

@@ -0,0 +1 @@
+worker1

test/worker-node/docker-compose.yml

@@ -0,0 +1,56 @@
+services:
+  database:
+    image: mariadb:10.7
+    deploy:
+      restart_policy:
+        condition: on-failure
+      placement:
+        constraints:
+          - node.hostname == worker1
+    environment:
+      MARIADB_ROOT_PASSWORD: test
+      MARIADB_DATABASE: backup
+    labels:
+      - docker-volume-backup.archive-pre=/bin/sh -c 'mysqldump -ptest --all-databases > /tmp/volume/dump.sql'
+      - docker-volume-backup.copy-post=/bin/sh -c 'echo "post" > /tmp/volume/post.txt'
+      - docker-volume-backup.stop-during-backup=true
+    volumes:
+      - app_data:/tmp/volume
+
+  other_database:
+    image: mariadb:10.7
+    deploy:
+      placement:
+        constraints:
+          - node.hostname == manager
+      restart_policy:
+        condition: on-failure
+    environment:
+      MARIADB_ROOT_PASSWORD: test
+      MARIADB_DATABASE: backup
+    labels:
+      - docker-volume-backup.archive-pre=touch /tmp/volume/not-relevant.txt
+      - docker-volume-backup.exec-label=not-relevant
+    volumes:
+      - app_data:/tmp/volume
+
+  backup:
+    image: offen/docker-volume-backup:${TEST_VERSION:-canary}
+    deploy:
+      restart_policy:
+        condition: on-failure
+      placement:
+        constraints:
+          - node.hostname == worker1
+    environment:
+      BACKUP_FILENAME: test.tar.gz
+      BACKUP_CRON_EXPRESSION: 0 0 5 31 2 ?
+      EXEC_FORWARD_OUTPUT: "true"
+    volumes:
+      - backup_archive:/archive
+      - app_data:/backup/data:ro
+      - /var/run/docker.sock:/var/run/docker.sock:ro
+
+volumes:
+  app_data:
+  backup_archive:

test/worker-node/run.sh

@@ -0,0 +1,33 @@
+#!/bin/sh
+
+set -e
+
+cd $(dirname $0)
+. ../util.sh
+current_test=$(basename $(pwd))
+
+export TMP_DIR=$(mktemp -d)
+export LOCAL_DIR=$(mktemp -d)
+
+while [ -z $(docker ps -q -f name=backup) ]; do
+  info "Backup container not ready yet. Retrying."
+  sleep 1
+done
+
+sleep 20
+
+docker exec $(docker ps -q -f name=backup) backup
+
+mkdir -p /archive
+docker cp $(docker ps -q -f name=backup):/archive $LOCAL_DIR
+
+tar -xvf "$LOCAL_DIR/archive/test.tar.gz" -C $TMP_DIR
+if [ ! -f "$TMP_DIR/backup/data/dump.sql" ]; then
+  fail "Could not find file written by pre command."
+fi
+pass "Found expected file."
+
+if [ -f "$TMP_DIR/backup/data/post.txt" ]; then
+  fail "File created in post command was present in backup."
+fi
+pass "Did not find unexpected file."

test/zstd/run.sh

@@ -23,7 +23,7 @@ docker run --rm -q \
   --network test_network \
   -v app_data:/backup/app_data \
   -v $LOCAL_DIR:/archive \
-  -v /var/run/docker.sock:/var/run/docker.sock \
+  -v /var/run/docker.sock:/var/run/docker.sock:ro \
   --env BACKUP_COMPRESSION=zst \
   --env BACKUP_FILENAME='test.{{ .Extension }}' \
   --entrypoint backup \