This container can be pulled via:
  docker pull registry.opensuse.org/opensuse/factory/powerpc/totest/containers/opensuse/toolbox:16.3
  docker pull registry.opensuse.org/opensuse/factory/powerpc/totest/containers/opensuse/toolbox:16.3-10.778
  docker pull registry.opensuse.org/opensuse/factory/powerpc/totest/containers/opensuse/toolbox:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.