This container can be pulled via:
  docker pull registry.opensuse.org/opensuse/tomcat:9
  docker pull registry.opensuse.org/opensuse/tomcat:9-1.27
  docker pull registry.opensuse.org/opensuse/tomcat:9.0-1.27
  docker pull registry.opensuse.org/opensuse/tomcat:9.0.91
  docker pull registry.opensuse.org/opensuse/tomcat:9.0.91-1.27

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.