add docker compose deployment docs

README.md

@@ -102,3 +102,29 @@ curl -X POST http://localhost:3002/api/analyze-document \
 API auth is required by default. For local-only development, you can set `API_AUTH_DISABLED=true`, but do not use that on a LAN or server.
 
 For Agent-facing image editing instructions, see `API图片修改-Agent.md`.
+
+## Docker Compose Deploy
+
+Create `.env.local` first:
+
+```env
+GEMINI_API_KEY="YOUR_GEMINI_API_KEY"
+API_AUTH_TOKEN="YOUR_LONG_RANDOM_API_TOKEN"
+API_AUTH_DISABLED="false"
+API_PORT="3002"
+APP_PASSWORD="123456"
+APP_URL="http://YOUR_SERVER_IP:3000"
+```
+
+Then start:
+
+```bash
+docker compose -f docker_compose.yaml up -d --build
+```
+
+Default ports:
+
+- UI: `http://YOUR_SERVER_IP:3000`
+- API: `http://YOUR_SERVER_IP:3002`
+
+For migration steps and port changes, see `迁移部署说明.md`.