HowToDeployToHeroku.txt

- Create a heroku app or use an existing one, e.g., "raffle-vaadin" accessible at https://raffle-vaadin.herokuapp.com
- Install heroku CLI
- In the folder containing the clone of https://github.com/scala-vienna/raffle-vaadin.git:
    - Adapt the external-url property in src\main\resources\application.conf to the corresponding heroku url, e.g., https://raffle-vaadin.herokuapp.com
    - git commit locally to master
    - Execute "heroku login"
	- Execute "heroku git:remote -a <heroku appname, e.g., raffle-vaadin>"
	- Execute "git push heroku master"
- Now, the app should be running here: https://raffle-vaadin.herokuapp.com

Trouble-shooting:
In case at the end of "git push heroku master" an error message like "Compiled slug size: 500.6M is too large (max is 500M)" is displayed, execute the following commands:

heroku plugins:install heroku-repo
heroku repo:gc --app raffle-vaadin
heroku repo:purge_cache --app raffle-vaadin