: Your .gitignore file must explicitly include *.local or .env.local.production . Shared repositories should never contain local files.
(The highest file-based priority for production) .env.production (General production settings) .env.local (Local overrides for all environments) .env (The default/fallback) When Should You Use It? 1. Debugging "Production-Only" Bugs
are you using (e.g., Next.js, Vite, or a backend language) so I can give you the exact file hierarchy? .env.local.production
Since we've established that .env.production.local is the standard, here's how you use it in Next.js.
: This file usually overrides .env.production and .env when the environment is set to "production" locally. js or Vite? Frontend Configuration & Development - Bookmark Deeploy : Your
A typical .env.local.production file might look like this:
For shared, non-secret settings, you can commit .env.development and .env.production files. : This file usually overrides
To do this, you run commands like npm run build && npm run start .
# .env.production (Committed to Git) NEXT_PUBLIC_API_URL=https://production-domain.com DATABASE_URL=postgresql://readonly_user@localhost/db Use code with caution.