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Description of problem: When pulling an image from the Red Hat container registry that requires a subscription, docker returns with error "unknown: Not Found". Version-Release number of selected component (if applicable): docker 1.10.3-57.el7.x86_64 How reproducible: always Steps to Reproduce: 1. given an unsubscribed host, docker pull registry.access.redhat.com/rhmap4/mongodb Actual results: Trying to pull repository registry.access.redhat.com/rhmap4/mongodb ... unknown: Not Found Expected results: Trying to pull repository registry.access.redhat.com/rhmap4/mongodb ... Image requires a valid subscription. Refer to product documentation.
isn't this a Registry issue? a RH registry issue. There should be a more appropriate error from the registry itself to be shown to user. I'm not sure if docker could even understand that "Not Found" as "no valid subscription"
Good point. It may be a registry issue. Returning a 401 or maybe even a custom 4xx code--something useful.