these 3 derivations will be built:
  /nix/store/642zw95cfprgfrxbvzbla6jjr2brlx38-container-test-driver-0.0.1.drv
  /nix/store/b3ys91mrwwhydv6ly7md5c3x1p3y6qhi-rootfs-ubuntu-22_04.drv
  /nix/store/ia8hggq8naqnz5f8p7qs35qjvdrzp71c-container-test-ubuntu-22-04-existing-files.drv