unbound:
    build: unbound
    hostname: unbound.mock.zknt.org
    dns: 127.0.0.1
    links:
        - nsd:nsd.mock.zknt.org
    volumes:
        - "./unbound.conf:/etc/unbound/unbound.conf:ro"
nsd:
    build: nsd
    hostname: nsd.mock.zknt.org
    volumes:
        - "./zones:/zones"
        - "./nsd.conf:/etc/nsd/nsd.conf:ro"