Setup local registry

[remipichon]

• add local registry https://docs.docker.com/registry/ (in docker-compose.yml, the one with Gitlab service)
• setup registry to work with Gitlab https://about.gitlab.com/2016/05/23/gitlab-container-registry/
• by default, internal only (don't open 5000 port to the outside)
• configurable (Ansible?) to open to the public via nginx-proxy (A DNS record needed)
• if public, support certificat (generate them with Ansible?)
• if not public, run in unsecure, no certif

[remipichon]

@JoelCapitao ou en es tu de cette tache ?