Gitlab + Gitlab Runner on same machine using Docker & Docker compose

docker-compose.yaml

version: "3"
services:

  gitlab:
    image: 'gitlab/gitlab-ce:latest'
    restart: always
    hostname: 'subdomain.example.com'
    environment:
      GITLAB_OMNIBUS_CONFIG: |
        external_url 'https://subdomain.example.com'
        letsencrypt['enable'] = true
        gitlab_rails['gitlab_shell_ssh_port'] = 822 #Custom port because 22 is used otherwise
        letsencrypt['auto_renew_hour'] = "3"
        letsencrypt['auto_renew_minute'] = "30"
        letsencrypt['auto_renew_day_of_month'] = "1"
        letsencrypt['auto_renew'] = true
        # for more options check gitlab documentation.
    ports:
      - '80:80'
      - '443:443'
      - '822:22' #Custom port because 22 is used otherwise
    volumes:
      - './gitlab/config:/etc/gitlab'
      - './gitlab/logs:/var/log/gitlab'
      - './gitlab/data:/var/opt/gitlab'
    networks:
     - backend

  gitlab-runner:
    image: 'gitlab/gitlab-runner:latest'
    restart: always
    volumes:
     - './gitlab-runner/config:/etc/gitlab-runner'
     - '/var/run/docker.sock:/var/run/docker.sock'
    depends_on:
     - gitlab
    networks:
     - backend

networks:
  backend:
    driver: bridge

manual.md

Start all containers from the same folder of the docker-compose file:

docker-compose up -d 

List running containers:

docker ps 

Inspect a container to find the ip of the container for local installation:

docker inspect <container> 

Register a runner:

docker exec -it <container> gitlab-runner register

Update:

docker-compose pull # get image tagged in docker-compose.yaml
docker-compose up -d # start container