these 2 derivations will be built:
  /nix/store/39drjpy02cd0z2b7dvn8fl8rqkmkzgd0-rootfs-ubuntu-26_04.tar.drv
  /nix/store/ah4z1k7gbwb469m279hbh8lhy6zszzd3-container-test-ubuntu-26-04-environment-variables.drv