You need to set the following env variables:
COOKIDOO_RECIPE_BASE_URL COOKIDOO_HOME_URL PORT
To run the docker container:
docker run -d -e PORT='8000' -e COOKIDOO_RECIPE_BASE_URL='https://cookidoo.de/recipes/recipe/de-DE/' -e COOKIDOO_HOME_URL='https://cookidoo.de/foundation/de-DE' -p 8000:8000 tobin2010/cookidoo-scraper`