This container can be pulled via:
  docker pull registry.opensuse.org/devel/kubic/containers/container_arm/kubic/fluent-bit:1.5.6
  docker pull registry.opensuse.org/devel/kubic/containers/container_arm/kubic/fluent-bit:1.5.6-3.721
  docker pull registry.opensuse.org/devel/kubic/containers/container_arm/kubic/fluent-bit:latest

Set DOCKER_CONTENT_TRUST=1 to enable image tag verification.