This works fine until you need to run a on your local machine.

In summary, .env.local.production is a powerful tool for local production simulation and manual server deployments, acting as the final local word on how your app should behave when it goes live. js or ?

: It allows a developer to test a production build locally with specific credentials without changing the shared .env.production file.

While CI/CD pipelines usually inject environment variables directly, having a .env.local.production strategy clarifies your mental model: It ensures that your local production build behavior mimics the deployed behavior as closely as possible.