Dotenv is a great tool and by default works right out of the box when you have a .env file.
Sometimes your .env file is in a different location than the root of your project.
Or sometimes if you are writing single Ruby scripts that use Dotenv you might want to execute them from outside the root of the script.
In these cases you can load in the file by explicitly telling Dotenv.load what file you want to load.
Dotenv.load './my/location/for.env'