Docker: Do not publicly expose API port

The default docker-setup exposes the API container directly on port 5000. This should not be the case and is not needed, as API access is all routed through the frontend nginx reverse proxy.

Part-of: <https://dev.funkwhale.audio/funkwhale/funkwhale/-/merge_requests/2324>

changes/changelog.d/docker-public-port.bugfix

@@ -0,0 +1 @@
+Docker setup: do not export the API port 5000 publicly

deploy/docker-compose.yml

@@ -59,8 +59,6 @@ services:
       - "${MUSIC_DIRECTORY_SERVE_PATH-/srv/funkwhale/data/music}:${MUSIC_DIRECTORY_PATH-/music}:ro"
       - "${MEDIA_ROOT}:${MEDIA_ROOT}"
       - "${STATIC_ROOT}:${STATIC_ROOT}"
-    ports:
-      - "5000"
 
   front:
     restart: unless-stopped