Commit 27b2797f7d added a local implementation
of this function, so let's use the local variant to (slightly) reduce the
dependency on moby's registry package.
Also made some minor cleanups.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Initialize AuthConfigs map if it's nil before returning it.
This fixes fileStore.Store nil dereference panic when adding a new key
to the map.
Signed-off-by: Danial Gharib <danial.mail.gh@gmail.com>
Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>