Docs feedback: Dependency Proxy docker registry authentication missing
Problem to solve
The dependency proxy documentation doesn't include any information of how to authenticate against the Docker registry when pulling through it.
Further details
When not authenticating the unauthenticated Docker Hub pull limit is enforced by client IP, which is a single IPv4 NAT address for most enterprises. This leads to blocked Docker Hub access for the whole company when a single user or client reaches this limit. I tried to set the DOCKER_AUTH_CONFIG CI variable which didn't have any effect.
Proposal
As there are no docs and I also wasn't able to find any information on the web, I don't know if this currently isn't supported at all or if just the documentation is missing. Depending on that it's "just" a documentation issue or larger work to add this feature.
Who can address the issue
Either documentation or dependency proxy team.
Other links/references
https://docs.gitlab.com/ee/user/packages/dependency_proxy/
Link the doc and describe what is wrong with it.