Enabled multiple workers in production build. Hopefully (#67)

this fixes the load time issue. Seems to work for me in local
prod mode.

Author: semohr

backend/beets_flask/config/flask_config.py

@@ -36,7 +36,7 @@ class ServerConfig:
 
     # Folder where the frontend build resources are stored
     # FIXME: 2025-06-04 likely we only need this in production.
-    FRONTEND_DIST_DIR = "../../frontend/dist/"
+    FRONTEND_DIST_DIR = "../frontend/dist/"
 
     # Not sure if this is even used!
     SECRET_KEY = "secret"

backend/beets_flask/server/websocket/__init__.py

@@ -17,6 +17,7 @@ def on(self, event: str, namespace: str | None = None) -> Callable: ...  # type:
         logger=False,
         engineio_logger=False,
         cors_allowed_origins="*",
+        client_manager=socketio.AsyncRedisManager("redis://"),
     ),
 )
 

docker/entrypoints/entrypoint.sh

@@ -26,4 +26,4 @@ redis-cli FLUSHALL
 uvicorn beets_flask.server.app:create_app --port 5001 \
     --host 0.0.0.0 \
     --factory \
-    --workers 1
+    --workers 4