Fix: Make management commands aware of the container environment (#9499)

docker/compose/docker-compose.sqlite-tika.yml

@@ -24,8 +24,9 @@
 # - Copy this file as 'docker-compose.yml' and the files 'docker-compose.env'
 #   and '.env' into a folder.
 # - Run 'docker compose pull'.
-# - Run 'docker compose run --rm webserver createsuperuser' to create a user.
 # - Run 'docker compose up -d'.
+# - Wait until the webserver has completed startup
+# - Run 'docker compose exec webserver createsuperuser' to create a user.
 #
 # For more extensive installation and update instructions, refer to the
 # documentation.