coredns docker compose config

Corefile

example.com {
    file db.example.com
    log
}

db.example.com

$ORIGIN example.com.
$TTL 1h
@                 IN  SOA     ns1.example.com. info.exmaple.com. (
                                  2020010510     ; Serial
                                  1d             ; Refresh
                                  2h             ; Retry
                                  4w             ; Expire
                                  1h)            ; Minimum TTL
@                 IN  A       1.2.3.4
@                 IN  NS      ns1.example.com.
ns1               IN  CNAME   @
www               IN  CNAME   @

docker-compose.yml

  coredns:
    restart: always
    logging:
      driver: "json-file"
      options:
        max-size: "200m"
    volumes:
      - ./docker/coredns/Corefile:/Corefile
      - ./docker/coredns/db.example.com:/db.example.com
    ports:
      - "53:53/udp"
    image: coredns/coredns:latest

dig +short @localhost -p 53 A example.com