This is the Gitlab CI Docker Runner Exmaple Node Docker Compose Yaml File. (Originally cloned from https://forum.gitlab.com/t/example-gitlab-runner-docker-compose-configuration/67344)

docker-compose.yaml

# docker volume create gitlab-runner-config
version: "3.5"

services:
  dind:
    image: docker:20-dind
    restart: always
    privileged: true
    environment:
      DOCKER_TLS_CERTDIR: ""
    command:
      - --storage-driver=overlay2

  runner:
    restart: always
    image: registry.gitlab.com/gitlab-org/gitlab-runner:alpine
    depends_on:
      - dind
    environment:
      - DOCKER_HOST=tcp://dind:2375
    volumes:
      - ./certs/:/mycerts/
      - gitlab-runner-config:/etc/gitlab-runner
      
  register-runner:
    restart: 'no'
    image: registry.gitlab.com/gitlab-org/gitlab-runner:alpine
    depends_on:
      - dind
    environment:
      - CI_SERVER_URL=${CI_SERVER_URL}
      - REGISTRATION_TOKEN=${REGISTRATION_TOKEN}
      - DOCKER_HOST=tcp://dind:2375
    command:
      - register
      - --non-interactive
      - --locked=false
      - --name=${RUNNER_NAME}
      - --executor=docker
      - --docker-image=docker:20-dind
      - --docker-volumes=/var/run/docker.sock:/var/run/docker.sock
      - --tls-ca-file=/mycerts/cert.cer
    volumes:
      - ./certs/:/mycerts/
      - gitlab-runner-config:/etc/gitlab-runner
      

volumes:
  gitlab-runner-config:
    external: true