these 3 derivations will be built:
  /nix/store/ilra3kayajxxk1lclih4q9b6kwz3rd7v-DockerSandboxes-linux-amd64.tar.gz.drv
  /nix/store/79pkpmslzjd70ac0mxzs86q66wjdssbj-docker-sbx-0.47.0.drv
  /nix/store/5yqkbsr3cm9wr0pcxh29d61kadgcgj93-check-docker-sbx.drv