This container can be pulled via:
  docker pull registry.opensuse.org/opensuse/factory/zsystems/totest/containers/opensuse/tomcat:9.0
  docker pull registry.opensuse.org/opensuse/factory/zsystems/totest/containers/opensuse/tomcat:9.0.87
  docker pull registry.opensuse.org/opensuse/factory/zsystems/totest/containers/opensuse/tomcat:9.0.87-2.1160

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.