Create a .env file in the /config package and add the following :
BACKEND_PORT=<your-backend-port>
JWT_SECRET=<your-jwt-secret>
DATABASE_URL=<your-database-connection-string>
RESEND_API_KEY=<your-resend-api-key>
CLIENT_ID_GITHUB=<your-github-client-id>
CLIENT_SECRET_GITHUB=<your-github-client-secret>