(feat) Dynamically set PGID, GID and GROUP_ID (#1091)

* base PGID on fsGroup

* also remove PGID from questions.yaml

* remove mistake

* small fix

* fix first test

* fix linting

* always set PUID to 568

* use quotes for env vars (obviously)

charts/stable/booksonic-air/values.yaml

@@ -27,9 +27,9 @@ env:
   # -- Set the container timezone
   TZ: UTC
   # -- Specify the user ID the application will run as
-  PUID: "568"
-  # -- Specify the group ID the application will run as
-  PGID: "568"
+  PUID: 568
+
+
   # -- Used to set the base path for reverse proxies eg. /booksonic, /books, etc.
   # CONTEXT_PATH=url-base