Using environment variables with Flexget variables

[piersolenski]

Flexget provides a way to use variables https://flexget.com/Plugins/variables, which can be good way to handle credentials for plugins.

Currently I have some secrets that need to be shared across docker instances, such as transmission credentials, stored in an .env file.

Is there a best practice for how I can share these with the variables.yml? Or should I look into docker secrets?