Docker - Gitlab - Improve README (#1642)
Docker - Gitlab - Improve README (#1642)

* first steps

* Add docker/gitlab readme

* Update gitlab version

* use container solutions for DBs

* fix links

Co-authored-by: Armando Miani <1ec27afce8c05818509814a9afe82ec8ce3349aa@google.com>
GoogleCloudPlatform/click-to-deploy,GoogleCloudPlatform/click-to-deploy,GoogleCloudPlatform/click-to-deploy,GoogleCloudPlatform/click-to-deploy,GoogleCloudPlatform/click-to-deploy,GoogleCloudPlatform/click-to-deploy