docker-compose.yml

services:
  gitlab:
    image: gitlab/gitlab-ce:${GITLAB_CE_VERSION}
    restart: always
    hostname: "${GITLAB_HOST}"
    container_name: gitlab
    environment:
      GITLAB_OMNIBUS_CONFIG: |
        external_url 'https://${GITLAB_HOST}'
        nginx['listen_port'] = 80
        nginx['listen_https'] = ${IS_NGINX_LISTEN_HTTPS:-false}
        
        gitlab_rails['gitlab_shell_ssh_port'] = ${GITLAB_SHELL_SSH_PORT:-8229}
        gitlab_rails['force_ssl'] = ${GITLAB_FORCE_SSL:-false}
        gitlab_rails['gitlab_https'] = ${GITLAB_HTTPS:-false}
        
        puma['worker_processes'] = ${PUMA_WORKER_PROCESSES:-2}
        prometheus_monitoring['enable'] = ${PROMETHEUS_MONITORING_ENABLED:-false}
        alertmanager['enable'] = ${ALERTMANAGER_ENABLED:-false}
        prometheus['enable'] = ${PROMETHEUS_ENABLED:-false}
        postgresql['shared_buffers'] = '256MB'
        
        gitlab_rails['smtp_enable'] = ${GITLAB_SMTP_ENABLED:-false}
        gitlab_rails['smtp_address'] = "${GITLAB_SMTP_ADDRESS}"
        gitlab_rails['smtp_port'] = ${GITLAB_SMTP_PORT}
        gitlab_rails['smtp_user_name'] = "${GITLAB_SMTP_USER_NAME}"
        gitlab_rails['smtp_password'] = "${GITLAB_SMTP_PASSWORD}"
        gitlab_rails['smtp_domain'] = "${GITLAB_SMTP_DOMAIN}"
        gitlab_rails['smtp_authentication'] = "${GITLAB_SMTP_AUTHENTICATION}"
        gitlab_rails['smtp_enable_starttls_auto'] = ${GITLAB_SMTP_ENABLE_STARTTLS_AUTO:-true}
        gitlab_rails['smtp_tls'] = ${GITLAB_SMTP_TLS:-false}
        gitlab_rails['smtp_openssl_verify_mode'] = "${GITLAB_SMTP_OPENSSL_VERIFY_MODE:-none}"
        gitlab_rails['gitlab_email_display_name'] = "${GITLAB_EMAIL_DISPLAY_NAME}"
        gitlab_rails['gitlab_email_from'] = "${GITLAB_EMAIL_FROM}"
        gitlab_rails['gitlab_email_reply_to'] = "${GITLAB_EMAIL_REPLY_TO}"
        gitlab_rails['incoming_email_enabled'] = ${GITLAB_INCOMING_EMAIL_ENABLED:-false}
    ports:
      - "${GITLAB_PORT:-80}:80"
      - "${GITLAB_HTTPS_PORT:-443}:443"
      - "${GITLAB_SSH_PORT:-2222}:22"
    volumes:
      - ./etc/gitlab/config:/etc/gitlab
      - ${GITLAB_LOGS_PATH}:/var/log/gitlab
      - ${GITLAB_DATA_PATH}:/var/opt/gitlab
    shm_size: "256m"
    deploy:
      resources:
        limits:
          cpus: '1.5'
          memory: '2GB'
        reservations:
          cpus: '1'
          memory: '1GB'