How to use Firefox Containers to distinguish between the production and the development environment.

You can add as much environments (Testing, Staging...) as you want. Download Firefox Multi-Account Containers [here](https://addons.mozilla.org/firefox/addon/multi-account-containers/). If you are interested in the privacy benefits of the container technology, look instead for the extension [First Party Isolation](https://addons.mozilla.org/firefox/addon/first-party-isolation/).