After a run of make examples BLUBBER_TEST_IMAGE=<something>:
/var/tmp# du -hs --total oci* 1.2M oci1066924815 249M oci1378222136 53M oci184340094 53M oci1887370681 343M oci1897324184 53M oci1934562445 53M oci1946147427 53M oci1989617510 53M oci2023277645 53M oci2056580386 343M oci2507745795 53M oci2568970803 127M oci2573527018 249M oci2879418349 127M oci295103750 53M oci3043969191 127M oci3105993644 53M oci3153995186 53M oci3156695320 53M oci3163006572 127M oci3346226500 386M oci3459790405 53M oci3493196765 53M oci3684328032 53M oci3956253349 53M oci3957996265 53M oci3958202411 53M oci4150622659 358M oci531459535 53M oci565552076 53M oci738015051 53M oci746987477 355M oci749742196 1.2M oci971631713 53M oci986438389 3.9G total