services:
  bind9_slave:
    image: ubuntu/bind9
    container_name: ${SERVER_NAME}
    volumes:
      - ${BIND_CONFIG}:/etc/bind/named.conf
      - ${VOL_SLAVE_ZONES}:/var/lib/bind
    ports:
      - "53:53/tcp"
      - "53:53/udp"
    networks:
      - dns_network
    user: ${USER}      

networks:
  dns_network:
    driver: bridge