You need a domain with ssl (https) for use this bot

git clone --recursive https://github.com/vitormattos/telegram-bot-duolingo.git
cd telegram-bot-duolingo
composer install

Add @BotFather to yours contacts and start the help with command /help Create a bot with /newbot

Deploy your application

Define environment var nammed TOKEN with your authorizaion code

Access the URL https:///webhook.php