Invalid nameserver address given with dns option in docker

[dexoid]

I am trying to use expose in the docker container.
At this case I want to use system DNS.
If I set DNS option to true I will get error.

docker-compose-cs-cart-exposer-1           |   Invalid nameserver address given
docker-compose-cs-cart-exposer-1           |
docker-compose-cs-cart-exposer-1           |   at vendor/react/dnsQuery/UdpTransportExecutor.php:110
docker-compose-cs-cart-exposer-1           |     106▕         }
docker-compose-cs-cart-exposer-1           |     107▕
docker-compose-cs-cart-exposer-1           |     108▕         $parts = \parse_url((\strpos($nameserver, '://') === false ? 'udp://' : '') . $nameserver);
docker-compose-cs-cart-exposer-1           |     109▕         if (!isset($parts['scheme'], $parts['host']) || $parts['scheme'] !== 'udp' || @\inet_pton(\trim($parts['host'], '[]')) === false) {
docker-compose-cs-cart-exposer-1           |   ➜ 110▕             throw new \InvalidArgumentException('Invalid nameserver address given');
docker-compose-cs-cart-exposer-1           |     111▕         }
docker-compose-cs-cart-exposer-1           |     112▕
docker-compose-cs-cart-exposer-1           |     113▕         $this->nameserver = 'udp://' . $parts['host'] . ':' . (isset($parts['port']) ? $parts['port'] : 53);
docker-compose-cs-cart-exposer-1           |     114▕         $this->loop = $loop ?: Loop::get();

I am using version 2.3.0. My docker-compose service:

  exposer:
    image: beyondcodegmbh/expose-server:2.3.0
    volumes:
    - exposer:/root/.expose
    depends_on:
      exposer-config:
        condition: service_completed_successfully
    command: ['share', '--server-host=XXX, '--subdomain=${EXPOSE_SUBDOMAIN}', '--dns=true', 'http://example.com:80']
    networks:
    - cscart
    profiles: ["exposing"]

How to use system DNS within docker container?