As a plugin writer, I have a read-only viewset for repository available in the plugin API
The container plugin has a repository type which is not managed by user and only GET should be allowed for such.
Without providing it in the plugin API, the plugin would need to define the
router_lookup with properly nested path directly in the plugin code. It's preferable if pulpcore provides such a repository viewset.
This needs to be in 3.10.