Docker Compose v2 多服务网络与健康检查编排

示例 compose.yaml

version: '3.9'
services:
  db:
    image: postgres:15
    environment:
      POSTGRES_PASSWORD: example
    healthcheck:
      test: ["CMD", "pg_isready", "-U", "postgres"]
      interval: 10s
      timeout: 5s
      retries: 5
    networks: [ backend ]
  api:
    image: example/api:latest
    depends_on:
      db:
        condition: service_healthy
    networks: [ backend ]
  web:
    image: example/web:latest
    networks: [ frontend ]
    profiles: [ prod ]
networks:
  backend: {}
  frontend: {}

运行与选择性启用

docker compose up -d
docker compose --profile prod up -d web

总结

通过健康检查与条件依赖可提升启动可靠性，profiles 支持按环境灵活启用组件。