these 2 derivations will be built:
  /nix/store/9fk91yvjl0dr23lwykiwfkblbz1zqrw1-rootfs-ubuntu-26_04.drv
  /nix/store/bvs2zpr83nbzalzb24kni5laj3z78c5k-container-test-ubuntu-26-04-ssh.drv