Docker private registry has confusing "library" subfolder

[Christian.Kolking_6524]

Q1. What is the "/library" subfolder used for? when is it necessary to include it?
Q2. Why can I "docker pull/push" an image with the "/libary" and without the "/library" subfolder?
I find this confusing, because if I push/pull with & without the subfolder, then I have a duplicate image in the "docker image ls" list.
Reference: Indeo docs https://docs.inedo.com/docs/proget/docker/private-registries; the "/library" subfolder is introduced in the API syntax under the Deleting Images section; for instance: https://proget.example.com/v2/main/**library**/node/tags/list, https://proget.example.com/v2/main/**library**/node/manifests/latest.

[atripp]

Welcome to Docker ;)

In Dockerland, all container image repositories (i.e. "folders") must be in a namespace. library is a reserved namespace, and it's synonymous with with _ and (empty). This means, when you do something like ,docker pull ubuntu, the client will translate that to library/ubuntu , then request it from the registry. Same thing with push.

You should avoid using library (or (empty) namespaces) for your own container images. Just put your own company name in.

FYI, we have some big plans with making this a lot easier to work with in the future, stay tuned!