Use unique db container and cleanup

.github/workflows/python-uv-ci.yml

@@ -134,7 +134,10 @@ jobs:
           db_type="${{ inputs.db_type }}"
           case "$db_type" in
             postgres|postgresql)
-              container_name="ci-postgres"
+              run_id="${GITHUB_RUN_ID:-local}"
+              attempt="${GITHUB_RUN_ATTEMPT:-0}"
+              container_name="ci-postgres-${run_id}-${attempt}"
+              echo "DB_CONTAINER_NAME=$container_name" >> "$GITHUB_ENV"
               docker run -d --name "$container_name" \
                 -e POSTGRES_USER=postgres \
                 -e POSTGRES_PASSWORD=postgres \
@@ -182,3 +185,10 @@ jobs:
       - name: Run tests
         if: ${{ inputs.test_command != '' }}
         run: ${{ inputs.test_command }}
+
+      - name: Cleanup database
+        if: ${{ always() && inputs.enable_db }}
+        run: |
+          if [ -n "${DB_CONTAINER_NAME:-}" ]; then
+            docker rm -f "$DB_CONTAINER_NAME" >/dev/null 2>&1 || true
+          fi