# Elixir Phoenix Configuration - Set `Build Pack` to `nixpacks` - Set `MIX_ENV` to `prod` - It should be a `Build time` environment variable - Set `SECRET_KEY_BASE` to a random string (https://hexdocs.pm/phoenix/deployment.html#handling-of-your-application-secrets) - It should be a `Build time` environment variable - Set `DATABASE_URL` to your database connection string - It should be a `Build time` environment variable - Set `Ports Exposes` to `4000` (default)