Merge branch '4.4' into 5.2

* 4.4:
  [Encore] Deploying to a CDN subdirectory

Author: javiereguiluz

frontend/encore/cdn.rst

@@ -39,6 +39,10 @@ pages also use the CDN. Fortunately, the
 :ref:`entrypoints.json <encore-entrypointsjson-simple-description>` paths are updated
 to include the full URL to the CDN.
 
+When deploying to a subdirectory of your CDN, you must add the path at the end of your URL -
+e.g. ``Encore.setPublicPath('https://my-cool-app.com.global.prod.fastly.net/awesome-website')``
+will generate assets URLs like ``https://my-cool-app.com.global.prod.fastly.net/awesome-website/dashboard.js``
+
 If you are using ``Encore.enableIntegrityHashes()`` and your CDN and your domain
 are not the `same-origin`_, you may need to set the ``crossorigin`` option in
 your webpack_encore.yaml configuration to ``anonymous`` or ``use-credentials``