compose.yml

version: '2'
networks:
  custom:
    driver: bridge
    ipam:
      driver: default
      config:
      - 
        subnet: 172.16.238.0/24

services:
  dns1:
    image: ***
    restart: always
    environment:
      RESOLVER_NAME: name2
    networks:
      custom:
        ipv4_address: 172.16.238.10
  dns2:
    image: ***
    restart: always
    environment:
      RESOLVER_NAME: name1
    networks:
      custom:
        ipv4_address: 172.16.238.11
  node1:
    image: ***
    restart: always
    dns: 
      - 172.16.238.10
      - 172.16.238.11
    dns_opt:
      - rotate
    networks:
      - custom
    depends_on:
      - dns1
      - dns2
    entrypoint: dig dnsleaktest.com