When creating your app, we also create three environments for you: development, staging, and production. Environments are where you deploy your app. You then install the app in an environment onto an Atlassian site to use it.
We recommend using the development environment for testing your changes, staging for a stable version of your app, and production as the version of your app that’s ready for use. For the rest of this tutorial you’ll only use the development environment.
By default, the CLI will run commands for the development environment unless you specify another with the flag.
Environment variables are key-value pairs you can set in each of your app environments (development, staging, production).
forge variables:set my-key my-value
forge variables:unset my-key
Note, when tunneling you will need to set your environment variables locally with a prefix of .