Image pull fails with an error "500 Internal Server" if local image exist but doesn't exist in the upstream registry

Issue

• Getting HTTP 500 at Image Pull - Redhat Quay Error: copying system image from manifest list: determining manifest MIME type for docker:.... in //: received unexpected HTTP status: 500 Internal Server

• If the image does not exist in the upstream registry (the org/repo doesn't exist), a 401 will be returned by the proxy config which will generate a 500 error in the pull process.