While developing the challenge you might come across an instance where you need to integrate multiple docker in the hacking lab platform.

There are multiple ways to do that.

Image - 1

References to other Wiki Articles

Multi-Docker Exposures

HL does only list one URL per resource. If you do multi-docker resources, only one will be listed in the user ui. Thus, a multi-docker nginx will do the routes to the other dockers.

As you can see in the Image 1, if you have multiple docker exposed to the challenge users then you should go with the nginx approach .

NGINX Helper Page

The purpose of the nginx helper page is to have an entry point for the other dockers used in the docker-compose.

Multi-Docker Expose Example

You can add multiple services using the nginx approach. The variable hobo will held the unique docker id when the docker manager is launching the resource. Keep an eye on the following

hobo
hobo-1
hobo-2

services:
  CHALLENGE_NAME-hobo:
    image: REGISTRY_BASE_URL/CHALLENGE_NAME:stable
    hostname: 'hobo'
    environment:
      - "domainname=idocker.REALM_DOMAIN_SUFFIX"
      - "SERVICES=hobo"
    cpus: 1
    mem_limit: 128M
    labels:
      - "traefik.port=80"
      - "traefik.frontend.rule=Host:hobo.idocker.REALM_DOMAIN_SUFFIX"
      - "traefik.protocol=http"


  CHALLENGE_NAME-hobo-1:
    image: REGISTRY_BASE_URL/CHALLENGE_NAME:stable
    hostname: 'hobo-1'
    networks:
      - hobo
      - tmp_default
    environment:
      - "domainname=idocker.REALM_DOMAIN_SUFFIX"
    cpus: 1
    mem_limit: 128M
    labels:
      - "traefik.port=7681"
      - "traefik.frontend.rule=Host:hobo-1.idocker.REALM_DOMAIN_SUFFIX"
      - "traefik.protocol=http"

networks:
  hobo:
  tmp_default:
    external: true