a teams bot for rapid prototyping of a Microsoft Teams Bot
Do not use it for production. In case you want a teams bot for production, check out the official Teams Bot Framework. https://learn.microsoft.com/en-US/azure/bot-service/bot-builder-basics?view=azure-bot-service-4.0
In case your organization does not allow you to prototype a bot with the official bot framework or it just takes to long to get it set up this way. In this case a fast prototype could be done with this hacky way.
Register for a Teams Account in case you do not have one. Set Username/Password as secret. Start the bot.