如果你设置一个 docker-compose.yml 在同一网络中有两个容器：

version: '3'
services:
  # Containers
  my_wp_container:
    # ...
    # Container config goes here
    # ...
    networks:
      # Make sure both containers are in the same network
      - my_network_name
    links:
      # "Linking" containers makes it easy to refer to one container from another
      - my_mysql_container

  my_mysql_container:
    # ...
    # Container config goes here
    # ...
    container_name: my_mysql_container
    networks:
      - my_network_name

networks:
  # No additional configuration is required for the network other than
  # creating it; You are of course free to customize it to your needs
  my_network_name:

跑步 docker-compose up 将同时旋转两个容器。你的wordpress容器( my_wp_container )可以轻松访问mysql my_mysql_container 现在是wp容器的主机别名。
一旦两个容器都在运行，就尝试ssh'ing到 my_wp_container 跑步：

ping my_mysql_container

您应该看到，一个容器可以在其docker网络中连接到另一个容器！