Webhook implementation

[BobaUbisoft17]

Hello, I want to help you implement the launch of a bot on a webhook. I added new environment variables that are needed for the webhook and added a docker file to run the bot on the webhook. Now you only need to buy and link an SSL certificate to the domain, or use the Let's Encrypt and run Nginx to proxy requests (an example of setting up Nginx with automatic re-issuance of SSL certificates)

[Masynchin]

Здравствуйте, многоуважаемый Бобас!

Спасибо за ПР. В целом - чисто и аккуратно, только пару помарок стиля исправить (моя оплошность, что CI пропустил), и смержу

[Masynchin]

Спасибо за вебхук! @BobaUbisoft17