Proposal - Merge PHP 8 versions into a single Dockerfile

[aegypius]

PHP 8 is quite consistent with its extensions and configuration, it may be more efficient for maintainers to use a single Dockerfile with multiple targets. This mean a single configuration file for all PHP 8 targets and parallel build to decrease build time.

This will solve #16 and reduce CI time in the future.

# ================================
# Configure base images
# ================================
FROM php:8.0-fpm as base_php_80
FROM php:8.1-fpm as base_php_81
FROM php:8.2-fpm as base_php_82
FROM php:8.3-fpm as base_php_83
FROM composer:2 as composer
FROM mlocati/php-extension-installer as extension-installer

# ================================
# Configure PHP
# ================================
FROM scratch as config 
WORKDIR /etc/php/conf.d/
COPY --link symfony.ini .
WORKDIR /etc/php/pool.d/
COPY --link symfony.pool.conf .

# ================================
# Build Final Images
# ================================
FROM base_php_80 as php_80
COPY --from=config / /
COPY --from=composer /usr/bin/composer /usr/local/bin/composer
COPY --from=extension-installer /usr/bin/install-php-extensions /usr/local/bin/
RUN install-php-extension intl gd opcache mbstring zip pdo_pgsql soap pgsql exif apcu  memcached imagick xdebug

FROM base_php_81 as php_81
COPY --from=config / /
COPY --from=composer /usr/bin/composer /usr/local/bin/composer
COPY --from=extension-installer /usr/bin/install-php-extensions /usr/local/bin/
RUN install-php-extension intl gd opcache mbstring zip pdo_pgsql soap pgsql exif apcu  memcached imagick xdebug

 # ...

[thislg]

If it speeds up build time then let's try it

[lucasmirloup]

Hi @aegypius 👋

Thanks for the proposal, and for suggesting mlocati/php-extension-installer 👍

I've opened a PR that uses this tool, but I've chosen to only use one Dockerfile stage and Docker Bake with a compose.yaml file to handle all versions, tags & platforms.

I could've split compilation on several GitHub workers, but that's not worth it in our case imo.