these 2 derivations will be built:
  /nix/store/blxgc2dqdvp7wj0a2s9g6p404nsgh0m0-rootfs-ubuntu-26_04.drv
  /nix/store/9b0q1wmrcac9nfimnfgv4lch1y7bi4sf-container-test-ubuntu-26-04-environment-variables.drv