This container can be pulled via:
  docker pull registry.opensuse.org/opensuse/factory/totest/containers/opensuse/nginx:1.17.7
  docker pull registry.opensuse.org/opensuse/factory/totest/containers/opensuse/nginx:1.17.7-1.64
  docker pull registry.opensuse.org/opensuse/factory/totest/containers/opensuse/nginx:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.