The containerdisk imageformat is used by KubeVirt to distribute bootable
cloud images as container image. [1] This allows for easy distribution of
guest images in the KubeVirt scope. Once downloaded, container images
are also cached and can be easily reused.

[1] https://kubevirt.io/user-guide/virtual_machines/disks_and_volumes/#containerdisk



Signed-off-by: Felix Matouschek <fmatouschek@redhat.com>