Support for environment variables

[whazor]

Currently I provide secrets via !env_var and have an env stub file that I would like to use for testing my home assistant configuration.

[frenck]

Interesting case, that would indeed be a nice addition.

How would you envision this would be configured?

[whazor]

Via a file env_file as optional input of the action where you can give up an .env file, then it will add --env-file to the docker check command. This will allow you to use !env_var inside of your home assistant config and have an env stub where you store secrets/variables.

This is a common pattern for people running Home Assistant in Kubernetes via k8s at home and where people mount secrets via environment variables, such that you can use encrypted secrets via SOPS.