This container can be pulled via:
  docker pull registry.opensuse.org/opensuse/factory/totest/containers/opensuse/apache-tomcat:9-openjdk21
  docker pull registry.opensuse.org/opensuse/factory/totest/containers/opensuse/apache-tomcat:9.0.91-openjdk21
  docker pull registry.opensuse.org/opensuse/factory/totest/containers/opensuse/apache-tomcat:9.0.91-openjdk21-10.13

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.