使不同的dockerCompose文件启动的容器能互相访问

有两个文件，处于不同的文件夹下

docker-compose-1.yml

version: "3"
services:
  docker-1:
    image: xxx
    container_name: container1
    hostname: host1

docker-compose-2.yml

version: "3"
services:
  docker-2:
    image: xxx
    container_name: container2
    hostname: host2

需要让两个容器能够访问，则需要加个网络

docker-compose-1.yml

version: "3"
services:
  docker-1:
    image: xxx
    container_name: container1
    hostname: host1
    networks:
      - testnet

networks:
  testnet:
    name: my_testnet
    driver: bridge

docker-compose-2.yml

version: "3"
services:
  docker-2:
    image: xxx
    container_name: container2
    hostname: host2
    networks:
      - my_testnet

networks:
  my_testnet:
    external: true

这两两个docker就可以通过容器名互相访问了，前提是第一个文件需要先启动