If a reference passed to the pull code contains both a tag and a digest,
currently the tag is used instead of the digest in the request to the
registry. This is the wrong behavior. Change it to favor the digest.
Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>
Upstream-commit: 0bff591bb0bc5a11ec22eb4f0b6104a79dea0819
Component: engine