these 2 derivations will be built:
  /nix/store/6j8c5yj4hijlmlhdcgjmfb0n9vz2h468-rootfs-ubuntu-22_04.drv
  /nix/store/5w0vfhj7db3z3bh1wyf5abilb44mqglg-container-test-ubuntu-22-04-example.drv