feat: php 84 container

[barkerl]

Description

This add php-fpm and php-cli 8.4 docker images to the dvsa-docker-images repo. There has been the minimum optimisations done to facilitate easy testing however i have enabled opcache (can easily be taken off).

I have also added these two new images to the existing workflows.

Related issue: JIRA_TICKET_NUMBER

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• Does the pull request title follow the conventional commit specification?
• Have you performed a self-review of the code
• Have you have added tests that prove the fix or feature is effective and working
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[Copilot]

Pull request overview

Adds PHP 8.4 base Docker images (FPM+Nginx and CLI) to the existing dvsa-docker-images structure, and wires them into CI/CD so they get built/published alongside the other language/version images.

Changes:

• Introduce new php/8.4/fpm-nginx image (nginx + php-fpm via supervisord) with custom nginx/php-fpm/php.ini configs.
• Introduce new php/8.4/cli image with a custom php.ini.
• Update CI/CD workflow matrices to include the new PHP 8.4 images.

Reviewed changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
php/8.4/fpm-nginx/Dockerfile	Defines new PHP 8.4 FPM+Nginx image build (installs nginx/supervisor, copies configs).
php/8.4/fpm-nginx/nginx.conf	Adds nginx base config for the new image.
php/8.4/fpm-nginx/php-fpm.conf	Adds php-fpm pool/global config for the new image.
php/8.4/fpm-nginx/php.ini	Adds PHP ini overrides (notably opcache/JIT settings).
php/8.4/fpm-nginx/supervisord.conf	Adds supervisord base config for running multiple processes.
php/8.4/fpm-nginx/supervisord/nginx.conf	Adds supervisord program entry for nginx.
php/8.4/fpm-nginx/supervisord/php-fpm.conf	Adds supervisord program entry for php-fpm.
php/8.4/cli/Dockerfile	Defines new PHP 8.4 CLI image build and copies ini overrides.
php/8.4/cli/php.ini	Adds PHP ini overrides for CLI (notably opcache/JIT settings).
.github/workflows/ci.yaml	Includes the two new PHP 8.4 images in the CI build matrix.
.github/workflows/cd.yaml	Includes the two new PHP 8.4 images in the CD build/publish matrix.

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[fibble]

Looks good, the opcache.jit stuff is the only bit i can see might cause issues, but it should be ok and is best left like this if it does work 👍

[adamjgriffith]

I believe this is included by default in /usr/local/etc/php/conf.d/docker-php-ext-opcache.ini.

[adamjgriffith]

I would potentially not do any of this opcache stuff here and instead delegate it to the downstream applications because this file is loaded into ${PHP_INI_DIR}/conf.d/zzz-dvsa-base.ini which I can see causing confusion at some point.