fix: let Coolify provide runtime env

CLAUDE.md

@@ -13,7 +13,7 @@ npm run start    # Start production server
 npm run lint     # ESLint (eslint-config-next/core-web-vitals + typescript)
 ```
 
-Docker deployment: port 8019, `docker-compose up` with `.env.production`, external network `sinobridge`.
+Docker deployment: port 8019, `docker-compose up` with env supplied by the deployment platform or shell, external network `sinobridge`.
 
 ## Architecture
 

README.md

@@ -74,7 +74,7 @@ The included Dockerfile builds a standalone Next.js output and starts `server.js
 docker compose up -d --build
 ```
 
-`docker-compose.yml` expects `.env.production` and an external Docker network named `sinobridge`.
+Set the required environment variables through your deployment platform or shell before starting Compose. The included `docker-compose.yml` expects an external Docker network named `sinobridge`.
 
 ## Operational Notes
 

docker-compose.yml

@@ -5,8 +5,6 @@ services:
     restart: unless-stopped
     ports:
       - "8019:8019"
-    env_file:
-      - .env.production
     networks:
       - sinobridge