GitLab can function as a fully fledged container registry for Docker containers. You can set options for it in the following section.

The first option is basically the on or off switch:

enabled: true

The next option is the hostname, which it will set:

host: registry.example.com

You can also define the network port it will listen on:

port: 5005

There is an internal address you can define that GitLab itself will connect to:

api_url: http://localhost:5000/  

The GitLab registry uses a keypair, the rootcertbundle, here is the private key location:

key: config/registry.key

Set the path that is used for storage:

path: shared/registry

Set the name of the issuer of the certificate:

issuer: gitlab-issuer