docker-compose 启动yaml有时可能的容器网段与宿主机的ip冲突导致宿主机上不了网，这时候可以更改yaml指定subnet

宿主机内网一般是192**，这时候容器可以指定172*

version: '3.9'
services:

  coredns:
    image: coredns/coredns:1.10.0
    container_name: coredns
    ports:
      - 53:53/udp
    networks:
      mynetwork:
        ipv4_address: 172.28.0.4
    volumes:
      - ./coredns/hostsfile:/etc/coredns/hostsfile
      - ./coredns/Corefile:/Corefile

networks:
  mynetwork1:
    driver: bridge
    ipam:
      driver: default
      config:
        - subnet: 172.28.0.0/16
          gateway: 172.28.0.1