read telegram token from file.

[shizunge]

Docker does not use environment variables to manage secrets. Instead docker mount secrets as a file in the container.

This change add a new option TELEGRAM_BOT_TOKEN_FILE to read token from a file and it takes precedence.

[vjFaLk]

Hey @shizunge you can add env vars when creating a container. That's how I use it.

Or did I misunderstand your point?

[shizunge]

We can use environment variables.
But docker secrets is a better way to manage sensitive data than environment variables. (I am using docker)

https://docs.docker.com/engine/swarm/secrets/
https://stackoverflow.com/questions/44615837/why-is-docker-secrets-more-secure-than-environment-variables