these 2 derivations will be built:
  /nix/store/y0aq6l1mlz6m4ihdwi368vgixnym46ys-rootfs-ubuntu-26_04.drv
  /nix/store/cah567vjbbw06xsc4mnbkjf9mn1k4qsd-container-test-ubuntu-26-04-environment-variables.drv