services:
  primary:
    build:
      context: .
      dockerfile: Dockerfile
      target: primary
    ports:
      - "5300:53/tcp"
      - "5300:53/udp"
    networks:
      dnsnet:
        ipv4_address: 129.18.0.42
  secondary1:
    build:
      context: .
      dockerfile: Dockerfile
      target: secondary
    ports:
      - "5301:53/tcp"
      - "5301:53/udp"
    networks:
      dnsnet:
        ipv4_address: 129.18.0.43
  secondary2:
    build:
      context: .
      dockerfile: Dockerfile
      target: secondary
    ports:
      - "5302:53/tcp"
      - "5302:53/udp"
    networks:
      dnsnet:
        ipv4_address: 129.18.0.45
networks:
  dnsnet:
    external: true