GitLab with runner via docker-compose

docker-compose.yaml

version: '3.7'

services:
  gitlab-web:
    image: gitlab/gitlab-ce:latest
    container_name: gitlab-web
    hostname: gitlab-web
    volumes:
      - './gitlab-config:/etc/gitlab'
      - './gitlab-logs:/var/log/gitlab'
      - './gitlab-data:/var/opt/gitlab'
    ports:
      - '2222:22'
      - '81:80'
      - '443:443'
      - '4567:4567'
    environment:
      GITLAB_OMNIBUS_CONFIG: |
        gitlab_rails['gitlab_shell_ssh_port'] = 2222
        registry_external_url 'http://localhost:4567'
        registry['enable'] = true
        unicorn['socket'] = '/opt/gitlab/var/unicorn/gitlab.socket'
    networks:
      - gitlab-network

  gitlab-runners:
    image: gitlab/gitlab-runner:latest
    container_name: gitlab-runners
    hostname: gitlab-runners
    volumes:
      - './gitlab-runners-config:/etc/gitlab-runner:Z'
      - '/var/run/docker.sock:/var/run/docker.sock'
    networks:
      - gitlab-network

networks:
  gitlab-network:
    name: gitlab-network

runner-register.sh

#!/bin/sh
# Get the registration token from:
# http://localhost:81/admin/runners

registration_token=XXXXXXXXXXXXXXX

docker exec -it gitlab-runners \
  gitlab-runner register \
    --non-interactive \
    --registration-token ${registration_token} \
    --locked=false \
    --description docker-stable \
    --url http://gitlab-web \
    --executor docker \
    --docker-image docker:stable \
    --docker-volumes "/var/run/docker.sock:/var/run/docker.sock" \
    --docker-network-mode gitlab-network \
    --docker-privileged