This container can be pulled via:
  docker pull registry.opensuse.org/opensuse/tomcat:9
  docker pull registry.opensuse.org/opensuse/tomcat:9-12.11
  docker pull registry.opensuse.org/opensuse/tomcat:9.0-12.11
  docker pull registry.opensuse.org/opensuse/tomcat:9.0.87-12.11

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.