Example plumber api for picking a winner from a list of items
heroku create --buildpack https://github.com/virtualstaticvoid/heroku-buildpack-r.git pickwinner # your-heroku-app-name
heroku git:remote -a pickwinner # your-heroku-app-name
heroku stack:set heroku-18
git push heroku main
heroku logs --tail
curl https://your-heroku-app-name.herokuapp.com/pickwinner?l=R,Python