these 2 derivations will be built:
  /nix/store/z78rx4nklyw00hm3rx5c9nw2mdcy7zii-container-test-driver-0.0.1.drv
  /nix/store/743njy5xnxxf5vfrakjgsj6n12nlm7pk-container-test-debian-13-ssh.drv