dns_server/docker-compose.yml at main · scorpiondefense/dns_server · GitHub

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services:
  dns:
    build:
      context: .
      dockerfile: Dockerfile
    container_name: dns-server
    restart: unless-stopped
    ports:
      # Map host port 53 to container port 53 (UDP)
      - "53:53/udp"
      # Uncomment for TCP support if needed
      # - "53:53/tcp"
    environment:
      # DNS server configuration
      DNS_PORT: "53"
      DNS_BIND: "0.0.0.0"
      DNS_BIND6: "::"
      DNS_CACHE_SIZE: "10000"
      DNS_TIMEOUT: "3000"
      # Set to "true" for sequential upstream queries
      DNS_SEQUENTIAL: "false"
      # Set to "true" to disable IPv4 or IPv6
      DNS_NO_IPV4: "false"
      DNS_NO_IPV6: "false"
    # Resource limits
    deploy:
      resources:
        limits:
          memory: 256M
          cpus: '0.5'
        reservations:
          memory: 128M
          cpus: '0.25'
    # Health check - verify DNS server responds
    healthcheck:
      test: ["CMD-SHELL", "echo '' | nc -u -w1 127.0.0.1 53 || exit 1"]
      interval: 30s
      timeout: 10s
      retries: 3
      start_period: 10s
    # Logging configuration
    logging:
      driver: "json-file"
      options:
        max-size: "10m"
        max-file: "3"
    # Network mode - use host network for better performance (optional)
    # Uncomment the following line and comment out 'ports' section for host networking
    # network_mode: host