Porperly separate dev and prod environment

[CheewyOFF]

Hello !

I am a junior Symfony dev, and I started a presonnal project recently with Caddy and PHP-FPM (unsuccessfully).

Now, I am trying to use FrankenPHP, but I am a bit confused with setting up distinctive development and production environments.

Indeed, I was previously setting up the php.ini file with the given php-development.ini and php-production.ini from PHP-FPM, as well as adding my own config into this file.

In the frankenphp repository, I saw that there is a dev.Dockerfile using the php-development.ini file, but appart from that, I don't know how I can use the php-production.ini file in my production environment, and how I should use dev.Dockerfile.

Is the default image using this php-production.ini file (didn't saw it) ? And how can I access this dev.Dockerfile so I can set up my own development image ? I was previously using Dockerfile stages with base, dev and prod for PHP-FPM, but I think for frankenphp using two separated images is a better way of doing things.