When working with a multi-container Docker architecture, different developers may use different local domains, ports, or proxy tools (like Traefik or ngrok).
: A shared template committed to the repository. It contains all required keys (e.g., DATABASE_URL , API_KEY ) but with placeholder or "safe" default values.
DB_HOST=db DB_PORT=5432 DB_USER=myuser DB_PASSWORD=mypassword
: Tools that treat environment variables as typed contracts with validation are gaining traction. Zod, TypeScript's type system, and JSON schema validation are increasingly used to define environment configuration schemas. .env.dist.local
# The URL to the internal API (default is staging) API_URL=https://example.com # Stripe Key (Fill in .env.local) STRIPE_SECRET= Use code with caution.
Thus, your CI script should explicitly not copy .env.dist.local . Instead, it might copy .env.dist (production-like) or inject secrets directly.
If you decide to implement .env.dist.local in your project workflow, follow these security and structural rules: Commit to Git (With Caution) Thus, your CI script should explicitly not copy
Even with best practices in place, teams encounter challenges. Here are common issues and their solutions.
If you want to introduce this file into your automated project setup (e.g., in a Node.js, Python, or PHP project), you can use a initialization script. Here is an example of a shell script ( setup.sh ) that leverages .env.dist.local :
In a Laravel project, you might have a .env.dist.local file with the following contents: in a Node.js
The developer opens .env.local and sets their local database credentials.
: A local override file for machines running the application locally. It contains machine-specific or developer-specific tweaks. ( Never committed to Git).