version: '3.8'

services:
  gitlab:
    image: gitlab/gitlab-ce:latest
    container_name: gitlab
    restart: unless-stopped
    hostname: 'gitlab.local'
    environment:
      GITLAB_OMNIBUS_CONFIG: |
        external_url 'http://gitlab.local'
        gitlab_rails['gitlab_shell_ssh_port'] = 2222
        # Reduce memory usage
        puma['worker_processes'] = 2
        sidekiq['max_concurrency'] = 5
        prometheus_monitoring['enable'] = false
    ports:
      - '8080:80'
      - '8443:443'
      - '2222:22'
    volumes:
      - gitlab_config:/etc/gitlab
      - gitlab_logs:/var/log/gitlab
      - gitlab_data:/var/opt/gitlab
    networks:
      - gitlab-network
    shm_size: '256m'
    # Resource limits for smaller deployments
    deploy:
      resources:
        limits:
          cpus: '4'
          memory: 8G
        reservations:
          cpus: '2'
          memory: 4G

volumes:
  gitlab_config:
    driver: local
  gitlab_logs:
    driver: local
  gitlab_data:
    driver: local

networks:
  gitlab-network:
    driver: bridge