If a swarm service is created using an image ID, it's useless to try to pull this reference or resolve it to a manifest digest. Avoid doing this when a fully qualified image ID is given. Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com> Upstream-commit: 089842c4b47c262187b0b1a8d6d124f3faa03752 Component: engine