(undercloud) [stack@queensX ~]$ openstack overcloud container image tag discover   --image trunk.registry.rdoproject.org/master/centos-binary-base:current-tripleo-rdo   --tag-from-label rdo_version
docker pull failed: Error: image master/centos-binary-base:3b85715c6488a692fcdf4e4c6a589d77c60eb5a6_a3792c8d not found
retrying pulling image: trunk.registry.rdoproject.org/master/centos-binary-base:3b85715c6488a692fcdf4e4c6a589d77c60eb5a6_a3792c8d
docker pull failed: Error: image master/centos-binary-base:3b85715c6488a692fcdf4e4c6a589d77c60eb5a6_a3792c8d not found
retrying pulling image: trunk.registry.rdoproject.org/master/centos-binary-base:3b85715c6488a692fcdf4e4c6a589d77c60eb5a6_a3792c8d
docker pull failed: Error: image master/centos-binary-base:3b85715c6488a692fcdf4e4c6a589d77c60eb5a6_a3792c8d not found
retrying pulling image: trunk.registry.rdoproject.org/master/centos-binary-base:3b85715c6488a692fcdf4e4c6a589d77c60eb5a6_a3792c8d
docker pull failed: Error: image master/centos-binary-base:3b85715c6488a692fcdf4e4c6a589d77c60eb5a6_a3792c8d not found
retrying pulling image: trunk.registry.rdoproject.org/master/centos-binary-base:3b85715c6488a692fcdf4e4c6a589d77c60eb5a6_a3792c8d
docker pull failed: Error: image master/centos-binary-base:3b85715c6488a692fcdf4e4c6a589d77c60eb5a6_a3792c8d not found
retrying pulling image: trunk.registry.rdoproject.org/master/centos-binary-base:3b85715c6488a692fcdf4e4c6a589d77c60eb5a6_a3792c8d
Could not pull image trunk.registry.rdoproject.org/master/centos-binary-base:3b85715c6488a692fcdf4e4c6a589d77c60eb5a6_a3792c8d