This container can be pulled via:
  docker pull registry.opensuse.org/home/ojkastl_buildservice/containers/15.6/containerfile/ojkastl_buildservice/opensuse-leap-dumb-init-helm-docs:15.6
  docker pull registry.opensuse.org/home/ojkastl_buildservice/containers/15.6/containerfile/ojkastl_buildservice/opensuse-leap-dumb-init-helm-docs:15.6-6.9

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.