Hey!

Thanks for this awesome lib!

It would be nice if dotenv-cli could read variables from multiple .env files. There is a common approach to use .env and .env.local, and maybe .env.<environment> (.env.production, .env.development, etc.) schema.

Here are the examples:

• https://symfony.com/doc/current/configuration.html#overriding-environment-values-via-env-local (Symfony)
• https://nextjs.org/docs/basic-features/environment-variables#default-environment-variables (Next.js)
• https://create-react-app.dev/docs/adding-custom-environment-variables/#what-other-env-files-can-be-used (Create React App)

It's a common and nice practice since you can use common defaults in an .env file and then override them in a machine-specific .env.local. Usually you commit .env to a git repository and do not commit .env.local (secrets go there).

Currently we can use -e envfile many times, but it would be nice to have, for example, a special argument to activate this schema:

dotenv --cascade -- <command with arguments>
# or different argument name of course