See:
https://jsserve-yay.herokuapp.com/
https://jsserve-yay.herokuapp.com/hello-world
https://jsserve-yay.herokuapp.com/some-request
To upload the app install the heroku-cli and run as explained in the heroku git deploy section: !!! Note the app name must be unique and must be updated in app.jl
$ git clone https://github.com/SimonDanisch/jsserve-heroku.git
$ cd jsserve-heroku
$ git init
$ git add .
$ git commit -m "first commit"
$ heroku create -a example-app
$ heroku git:remote -a example-app