Add GD and various image format support

[mmatsoo]

Description

This PR was opened a long time ago (July 2025) as an effort to get all necessary support into our Docker image, to support the various optimizations used by Drupal when it works with newer uploaded media types. (e.g. avif)

Motivation / Context

#83

[apotek]

This is failing builds, probably due to software-properties-common package.

[mmatsoo]

@apotek Many thanks for the review! I removed software-properties-common, but added in google-chrome-stable because Gemini noted that we have the "Chrome repo and signing key" added, but we don't include chrome in the package list.

Google Chrome is added to apt sources but never installed
You add the Chrome repo and signing key, then run apt-get install — but google-chrome-stable is not in the package list. This is either a bug (you meant to install it) or dead code. If it's for Puppeteer/browser testing, add google-chrome-stable. If not, remove the repo setup.

TBH, I don't know if we need it or not. Segal uses Pupeteer in its tests, but they've been running for years without it. Maybe @agarzola has thoughts?

[apotek]

If there is buy-in for this being our new standard, all is good to go.

I suggested a voluntary edit to alphabetize your list of dependencies for easier future maintenance, but non-blocking.

[apotek]

I am a big fan of alphabetizing lists of things so its easier to see if something is there or not. Minor nudge.

[mmatsoo]

@apotek Yep, happy to do that kind of clean up. It actually resulted in adding Chrome stable to the nginx Dockerfile, too. And the nginx version was also missing some of the image-related packages we have in the apache version so now both versions should have equivalent support.

[apotek]

I see we have never instituted releases of docker-images. Should we?

I'm fine with you merging this in. Maybe pre-announce that you will so people have a few days to prepare for the change to their projects.