these 2 derivations will be built:
  /nix/store/0kxrgwi5i4gdi9hjksnaj2s2iiylq38x-rootfs-ubuntu-24_04.tar.drv
  /nix/store/in7y35469a5vr19w2jbhmhyn2j79vpwz-container-test-ubuntu-24-04-existing-files.drv