f3207e76c8
This change adds a basic catalog endpoint to the API, which returns a list, or partial list, of all of the repositories contained in the registry. Calls to this endpoint are somewhat expensive, as every call requires walking a large part of the registry. Instead, to maintain a list of repositories, you would first call the catalog endpoint to get an initial list, and then use the events API to maintain any future repositories. Signed-off-by: Patrick Devine <patrick.devine@docker.com>