these 2 derivations will be built:
  /nix/store/qss2v74lgwa8xxryfycbsn12dqalv022-container-test-driver-0.0.1.drv
  /nix/store/rc5i9lqqa10xnnd84w2nqlkx6qdr8izg-container-test-debian-13-ssh.drv