Keeping specific and security variables in an .env file

[Jcarlosmiguel]

Hi Luca, I have modified the docker-compose.yml to support .env variables which facilitate the settings of passwords as well as specific elements of the site (email, urls, etc). However, there is a file (config.yaml) that requires username, password and the url links for django to work. I would like to have some way to keep all these variables in one file (.env) and having them passed to any further configuration. This will facilitate enormously the deployment of the container in other sites