diff --git a/CLAUDE.md b/CLAUDE.md
index 5199fd6..e2c93e7 100644
--- a/CLAUDE.md
+++ b/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
 
diff --git a/README.md b/README.md
index ff3908a..6ed3748 100644
--- a/README.md
+++ b/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
 
diff --git a/docker-compose.yml b/docker-compose.yml
index 0c4c8c8..459dd62 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -5,8 +5,6 @@ services:
     restart: unless-stopped
     ports:
       - "8019:8019"
-    env_file:
-      - .env.production
     networks:
       - sinobridge