docker-compose.yml编写

version: '3'
services:
  wad_redis:
    image: redis:latest
    ports:            ###将端口映射到宿主
      - "6379:6379"
    restart: always
    networks:      ####使用已创建的网络bridge_internet，并指定IP
      bridge_internet:
        ipv4_address: 172.18.0.11

networks:         ###此处要先声明已有的网络bridge_internet
 bridge_internet:
    external: true

指定使用默认网络：

#前面无需指定networks，使用已存在的网络watchad-master_default
networks:
  default:
    external:
      name: watchad-master_default

默认桥接网络上的容器间使用容器名称无法ping通，自定义的桥接网络上的容器间的 容器名称（container_name） 可以ping通，hostname不能ping通 

使用host网络：

  watchad_logstash:
    image: logstash:6.4.1
    ports:
      - "5044:5044"
    environment:
      XPACK_MONITORING_ENABLED: "false"
      pipeline.batch.size: 10
    volumes:
      - ./settings/logstash/:/usr/share/logstash/pipeline/
    network_mode: "host"
    restart: always

volumes用法：

ersion: '3'
services:
  test_alpine01:
    image: alpine:latest
    container_name: alpine10
    volumes:
      - type: volume  #使用docker管理的volume
        source: mydata01
        target: /data01
        volume:
          nocopy: true
      - type: bind   #将宿主绝对路径映射到容器内部
        source: ./curr_mydata02
        target: /data02
    networks:
      - bridge_internet


  test_alpine02:
    image: alpine:latest
    container_name: alpine11
    volumes:
      - "alpine_v02:/my_v02"
      - "/home/d03/index.htm:/var/my/index.htm"
    networks:
      - bridge_internet



networks:
  bridge_internet:
    external: true
volumes:
  mydata01:
  alpine_v02:   #不需要已存在，docker会自动创建

volumes_from用法：

volumes_from:
  - service_name
  - service_name:ro
  - container:container_name
  - container:container_name:rw

参考：https://www.jianshu.com/p/2217cfed29d7

build用法：

version: '2'
services:
  frontend:
    build: ./frontend  ####指定Dockerfile所在目录
    ports:
      - "80:80"

  server:
    build: ./server    ####指定Dockerfile所在目录

 ports: - "5000:5000" network_mode: "host"

 
entrypoint.sh文件位置：/usr/local/bin/docker-entrypoint.sh