Cannot send message without a sender address

[aronmal]

Is your feature request related to a problem? Please describe.
An error message is showing up if you click "Forgot your password? Reset it", then type in your email, click "Send password reset link" and be surprised with the error.

Describe the solution you'd like
Is see email related setting in the app.json file, but I did not found this file in my docker volume folder and there does not seem to be docker environment variables to adjust these. So if it email delivery is already implemented, the settings should be adjustable for individual users.

Additional context

[aronmal]

OK, if I correct my self, I found this:

As described in the Docker doc you can modify and use the docker-compose file or start 2FAuth with custom env variables, like so:

docker run --rm -d  -p 8000:8000/tcp \
MAIL_DRIVER=smtp \
MAIL_HOST=SSL0.OVH.NET \
MAIL_PORT=465 \
MAIL_USERNAME=myName@domain.org \
MAIL_PASSWORD=MyEmailProviderPwd \
MAIL_ENCRYPTION=ssl \
MAIL_FROM_NAME="MyName" \
MAIL_FROM_ADDRESS=myName@domain.org \
2fauth/2fauth:latest

As seen in #50 (comment)

But it is no where documented. So please update docs somewhere and the dockerhub description please.

[aronmal]

Is the .env.example still a thing?

Or is this:

You can set environment variables available (see the .env.example) with -e, for example -e APP_NAME=2FAuth.

the way to got to set the variables, because of this:

What	Bubka/2Fauth-Docker	qdm12/2Fauth	Final	Why
Read env from files	yes	no	no	there is not much of a point since the env is populated with content of secret files. Correct me if I'm wrong though
Env	Use .env	Use env variables injected by Docker	Use env variables injected by Docker	Simpler to use for Docker users. They can always use a .env on their host to populate their env with Docker

Either way, the documentation should be updated to be more clear.