This is an example Rails 5.1 app with Elm on the front-end handled by Webpacker, running on Heroku.

To deploy to Heroku, create a Heroku app, configure the buildpacks and push:

$ heroku git:remote -a <Heroku app name> $ heroku buildpacks:add heroku/nodejs $ heroku buildpacks:add heroku/ruby $ git push heroku master 

$ bundle $ yarn install $ foreman start 

Now you can visit localhost:5000 from your browser.