feat: configurable port, use HUB_DATA and HUB_PORT env vars

backend/src/app.py

@@ -437,9 +437,10 @@ class App(ChatMixin):
 
 async def main():
     # Get data directory from environment variable
-    data_directory = os.getenv("HORDE_DATA_DIR")
+    data_directory = os.getenv("HUB_DATA")
     if not data_directory:
-        raise ValueError("HORDE_DATA_DIR environment variable must be set")
+        raise ValueError("HUB_DATA environment variable must be set")
+    port = os.getenv("HUB_PORT", 17922)
 
     # 1. Initialize Database First
     await db.init_database(data_directory)
@@ -456,7 +457,7 @@ async def main():
     # manually trigger server shutdown, avoids hypercorn installing signal handlers
     shutdown_event = asyncio.Event()
     # TODO: get port from env or don't pass it (actually server should handle none)
-    server_task = asyncio.create_task(start_server(horde_app, shutdown_event))
+    server_task = asyncio.create_task(start_server(horde_app, port, shutdown_event))
 
     # 4. Graceful Termination
     loop = asyncio.get_running_loop()