The project developer creates .env.sample and commits it to git.
JWT_SECRET=change_this_in_production
Let's start with the basics. A standard .env file (dot-env) is a plain text file used to store environment variables for a specific environment (development, staging, production). It usually looks like this: .env.sample
SENDGRID_API_KEY=SG.change_me
Suddenly, .env.sample felt a surge of electricity! It was no longer a hollow shell. It held the SECRET_KEY to the kingdom and the DATABASE_URL that connected all the trees. It felt important, heavy with responsibility. The project developer creates