A minimal example of running a telegram bot built using Telegraf on Heroku.
Create a new heroku app.
heroku apps:create <name of app>
Obtain a BOT_TOKEN from BotFather in Telegram and set it in heroku.
heroku config:set -a <name of app> BOT_TOKEN=<token obtained from botfather>
Push the code to heroku
git push heroku master
Scale down the web dyno and scale up the worker dyno
heroku ps:scale web=0 worker=1
Check out the logs
heroku logs -t