This container can be pulled via:
  docker pull registry.opensuse.org/devel/bci/16.0/containerfile/suse/sles/16.0/virt-exportserver:1.5
  docker pull registry.opensuse.org/devel/bci/16.0/containerfile/suse/sles/16.0/virt-exportserver:1.5.2
  docker pull registry.opensuse.org/devel/bci/16.0/containerfile/suse/sles/16.0/virt-exportserver:1.5.2-13.1

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.