docker-compose.yml configuring GitLab

docker-compose.yml

version: '2'
services:
  gitlab:
    container_name: gitlab
    image: gitlab/gitlab-ce:latest
    restart: always
    environment:
      GITLAB_OMNIBUS_CONFIG: |
        ## GitLab configuration settings
        ##! Check out the latest version of this file to know about the different
        ##! settings that can be configured by this file, which may be found at:
        ##! https://gitlab.com/gitlab-org/omnibus-gitlab/raw/master/files/gitlab-config-template/gitlab.rb.template

        ## GitLab URL
        ##! URL on which GitLab will be reachable.
        ##! For more details on configuring external_url see:
        ##! https://docs.gitlab.com/omnibus/settings/configuration.html#configuring-the-external-url-for-gitlab
        external_url 'http://gitlab.example.com'

        ################################################################################
        ## gitlab.yml configuration
        ##! Docs: https://gitlab.com/gitlab-org/omnibus-gitlab/blob/master/doc/settings/gitlab.yml.md
        ################################################################################

        gitlab_rails['gitlab_ssh_host'] = 'ssh.gitlab.example.com'
        gitlab_rails['time_zone'] = 'UTC'
    volumes_from:
      - gitlab-data
    ports:
      - "80:80"
      - "2222:22"

  gitlab-data:
    container_name: gitlab-data
    image: busybox
    volumes:
      - /etc/gitlab
      - /var/log/gitlab
      - /var/opt/gitlab