Since Atramhasis 2.1.0 (https://github.com/OnroerendErfgoed/atramhasis/releases/tag/2.1.0), the cookiecutters have been integrated into the project itself. To create a new Atramhasis Demo, please refer to https://atramhasis.readthedocs.io/en/latest/demo.html#running-a-demo-site-with-cookiecutter.