Environment variable for smtp relay?

[eriktroost070]

We are starting to use Postal as a email relay, which in turn needs to relay to another mailserver of our company.

But one thing that I'm missing is a environment variable to set the smtp_relay option in postal.yml config file.
Or any other way of setting this during container creation.

I could probably edit the container and set a smtp_relay and save that container for internal use, but I'd rather use a public container in case of updates and such.

[eriktroost070]

Never mind, found them.

hostname: ${SMTP_RELAY_HOST}
port: ${SMTP_RELAY_PORT}
ssl_mode: ${SMTP_RELAY_SSL_MODE}