Images from the internal registry that are no longer required by the system due to age, status,
or exceed limits are automatically pruned. Cluster administrators can configure the Pruning Custom Resource, or suspend it.
For more information on configuring the ImagePruner, consult the
OpenShift documentation:
https://access.redhat.com/documentation/en-us/openshift_container_platform/latest/html/building_applications/pruning-objects