Add FrankenPHP support - Update Dockerfile

[sneycampos]

• set ENV SERVER_NAME=:8080 so frankenphp can run in 8080 port
• using frankenphp base install-php-extensions script to install php extensions (and system dependencies?)
• removed usage of docker-php-serversideup-dep-install-debian since all dependencies are installed by frankenphp install-php-extensions

[sneycampos]

@jaydrogers Should we remove capabilities from Frankenphp since its running in a non privileged port?

[DarkGhostHunter]

It should be aware that FrankenPHP only works with PHP 8.1 (given what the docs say, haven't tested on older versions and even if it does it may have zero support)

[sneycampos]

It should be aware that FrankenPHP only works with PHP 8.1 (given what the docs say, haven't tested on older versions and even if it does it may have zero support)

FrankenPHP does not support PHP 8.1 and won't: #637

[DarkGhostHunter]

Thanks for the correction. Should be 8.2.