these 4 derivations will be built:
  /nix/store/3v6hh8mxb2k4zilrlsfmkgrfpwfnbd0b-nix2container-1.0.0.drv
  /nix/store/maahs1frxl9ngwqvf59rkl8s6wz20wx7-layers.json.drv
  /nix/store/56nlzwaxl0kpj4inqhznjaa79dvr3cgm-layers.json.drv
  /nix/store/j0jsqi44ydwcbji1hbiazl5rrmmc8bp7-image-fd.json.drv