Loading Priorities

@dotenv-run/cli uses dotenv to support loading environment variables from .env files.

@dotenv-run/cli loads .env files with these specific names for the following -e ENV value, files on the top have less priority than files on the bottom.

An env file for a specific mode (e.g. .env.production) will take higher priority than a generic one (e.g. .env).

valid .env filenames	ENV=*	ENV=test
.env	✔️	✔️
.env.local	✔️	✖️
.env.${ENV}	✔️	✔️
.env.${ENV}.local	✔️	✔️

In addition, environment variables that already exist when the CLI is executed have the highest priority and will not be overwritten by .env files. For example, when running SOME_KEY=123 dotenv-run.