Gitlab Runner - docker-compose v2

docker-compose.yml

version: '2'

services:

  dind:
    restart: always
    privileged: true
    volumes:
      - /var/lib/docker
    image: docker:17.09.0-ce-dind
    command: 
      - --storage-driver=overlay2

  runner:
    restart: always
    image: gitlab/gitlab-runner:alpine
    volumes:
      - gitlab_runner:/etc/gitlab-runner:Z
    environment:
      - DOCKER_HOST=tcp://dind:2375

  register-runner:
    restart: 'no'
    image: gitlab/gitlab-runner:alpine
    volumes:
      - gitlab_runner:/etc/gitlab-runner:Z
    command:
      - register
      - --non-interactive
      - --locked=false
      - --name=Docker Runner
      - --executor=docker
      - --docker-image=docker:17.09.0-ce-dind
      - --docker-volumes=/var/run/docker.sock:/var/run/docker.sock
    environment:
      - CI_SERVER_URL=https://gitlab.com/
      - REGISTRATION_TOKEN=[[GITLAB-TOKEN]]