Rewrite API to FastAPI, separate API from CodeGen, remove dev settings

docker-compose.yaml

@@ -19,6 +19,12 @@ services:
               capabilities: [gpu]
   copilot_proxy:
     image: moyix/copilot_proxy:latest
-    command: python3 -m flask run --host=0.0.0.0 --port=5000
+    # For local build
+#    build:
+#      context: .
+#      dockerfile: copilot_proxy/Dockerfile
+    command: uvicorn app:app --host $API_HOST --port $API_PORT
+    env_file:
+      - .env
     ports:
-      - "5000:5000"
+      - "5001:${API_PORT}"