version: "3.8"

services:
  postgres:
    image: abcfy2/zhparser:16-alpine
    container_name: lab-postgres
    restart: unless-stopped
    environment:
      POSTGRES_DB: lab
      POSTGRES_USER: admin
      POSTGRES_PASSWORD: ${PG_PASSWORD}
    volumes:
      - ./data/postgres:/var/lib/postgresql/data
    # 测试环境不用刻意限制内存，让 Docker 自然调度即可
    networks:
      - net-db           # 只加入数据库专用网络
    # 如果外部需要直连调试，可临时 expose 端口
    ports:
      - "127.0.0.1:5432:5432" 

  redis:
    image: redis:7-alpine
    container_name: lab-redis
    restart: unless-stopped
    # 测试环境保留持久化更省心，不用关闭
    command: redis-server --maxmemory 128mb --maxmemory-policy allkeys-lru
    volumes:
      - ./data/redis:/data
    networks:
      - net-db
    ports:
      - "127.0.0.1:6379:6379"

networks:
  net-db:
    external: true       # 使用预先创建的外部网络