these 4 derivations will be built:
  /nix/store/3v6hh8mxb2k4zilrlsfmkgrfpwfnbd0b-nix2container-1.0.0.drv
  /nix/store/702053lb4cqzg5n1ws7ajgcal1ryamqv-layers.json.drv
  /nix/store/85d40bbmnyy9djil7jl5yji2gx4psjav-layers.json.drv
  /nix/store/nhc68y31mq9k7wmk687k6jl457zmpksx-image-fd.json.drv