Install Firefox 94 instead of the latest Nightly

install.js

@@ -0,0 +1,40 @@
+const fs = require('fs');
+const puppeteer = require('puppeteer');
+
+(async () => {
+
+  // Puppeteer does not allow to download Firefox revisions, just the last Nightly
+  // We this script we can download any version
+  const revision = '94.0a1';
+  const downloadHost = 'https://archive.mozilla.org/pub/firefox/nightly/2021/10/2021-10-01-09-33-23-mozilla-central';
+
+  // skip installation (for Dockerfile)
+  if (process.env.PUPPETEER_EXECUTABLE_PATH) {
+    console.log('Skipping Firefox installation because the environment variable "PUPPETEER_EXECUTABLE_PATH" is set.');
+    return;
+  }
+
+  // check if Firefox is already installed
+  const f = puppeteer.createBrowserFetcher({
+    product: 'firefox',
+    host: downloadHost
+  })
+  if (fs.existsSync(f._getFolderPath(revision))) {
+    console.log(`Firefox ${revision} already installed...`)
+    return;
+  }
+
+  console.log(`Installing firefox ${revision} ...`)
+  const downloadPath = f._downloadsFolder;
+  console.log(`Download path: ${downloadPath}`)
+  if (fs.existsSync(downloadPath)) {
+    console.log(`Removing previous downloads...`)
+    fs.rmSync(downloadPath, { recursive: true })
+  }
+
+  console.log(`Downloading firefox ${revision} ...`)
+  await f.download(revision)
+
+  console.log('Installation complete...')
+
+})()