Add docker-compose template for VPS deployment

docker-compose.yml

@@ -0,0 +1,44 @@
+services:
+  backend:
+    build:
+      context: ./backend
+      dockerfile: Dockerfile
+    container_name: memberapi-backend
+    restart: unless-stopped
+    env_file:
+      - ./backend/.env
+    ports:
+      - "127.0.0.1:8000:8000"
+    depends_on:
+      redis:
+        condition: service_healthy
+    healthcheck:
+      test: ["CMD-SHELL", "wget -qO- http://127.0.0.1:8000/healthz >/dev/null || exit 1"]
+      interval: 30s
+      timeout: 5s
+      retries: 5
+      start_period: 20s
+    networks:
+      - member-net
+
+  redis:
+    image: redis:7-alpine
+    container_name: memberapi-redis
+    restart: unless-stopped
+    command: ["redis-server", "--appendonly", "yes"]
+    volumes:
+      - redis-data:/data
+    healthcheck:
+      test: ["CMD", "redis-cli", "ping"]
+      interval: 10s
+      timeout: 3s
+      retries: 5
+    networks:
+      - member-net
+
+networks:
+  member-net:
+    driver: bridge
+
+volumes:
+  redis-data:

docs/VPS_DEPLOY_RUNBOOK.md

@@ -38,6 +38,26 @@ curl http://127.0.0.1:8000/healthz
 docker logs -f memberapi-backend
 ```
 
+### 用 docker compose（建議）
+Compose 檔案：[docker-compose.yml](../docker-compose.yml)
+
+啟動：
+```bash
+cd /opt/member-platform
+docker compose up -d --build
+```
+
+檢查：
+```bash
+docker compose ps
+docker compose logs -f backend
+```
+
+停止：
+```bash
+docker compose down
+```
+
 ## 3) 前端部署（Nginx）
 ```bash
 cd /opt/member-platform/frontend