Remove deprecated APP_MODULE env variable

README.md

@@ -94,7 +94,7 @@ Let's go through these lines one-by-one:
  6. *Optional:* If you need to run any build-time tasks, such as collecting static assets, now's the time to do that.
  7. We set the container command (`CMD`) to a list of arguments that will be passed to `gunicorn`. We need to provide Gunicorn with the [`APP_MODULE`](http://docs.gunicorn.org/en/stable/run.html?highlight=app_module#gunicorn), so that it knows which WSGI app to run.*
 
-> Note that previously the way to do point 5 was to set the `APP_MODULE` environment variable. That still works, but is no longer the recommended way and is deprecated.
+> Note that previously the way to do point 5 was to set the `APP_MODULE` environment variable. This functionality has been removed.
 
 By default, the [`django-entrypoint.sh`](django-entrypoint.sh) script is run when the container is started. This script runs a once-off `django-admin migrate` to update the database schemas and then launches `nginx` and `gunicorn` to run the application.
 

django-entrypoint.sh

@@ -1,9 +1,8 @@
 #!/usr/bin/env sh
 set -e
 
-# No args or looks like options or the APP_MODULE for Gunicorn
-if [ "$#" = 0 ] || \
-    [ "${1#-}" != "$1" ] || \
+# Looks like options or the APP_MODULE for Gunicorn
+if [ "${1#-}" != "$1" ] || \
     echo "$1" | grep -Eq '^([_A-Za-z]\w*\.)*[_A-Za-z]\w*:[_A-Za-z]\w*$'; then
   set -- gunicorn "$@"
 fi
@@ -57,12 +56,6 @@ if not User.objects.filter(username='admin').exists():
     celery-entrypoint.sh beat --pidfile beat.pid &
   fi
 
-  if [ -n "$APP_MODULE" ]; then
-    echo 'DEPRECATED: Providing APP_MODULE via an environment variable is deprecated.
-            Please provide it using the container command rather.' 1>&2
-    set -- "$@" "$APP_MODULE"
-  fi
-
   # Set some sensible Gunicorn options, needed for things to work with Nginx
 
   # umask working files (worker tmp files & unix socket) as 0o117 (i.e. chmod as