bump alpine to 3.20.6 and build apk packages in this repo

[joecorall]

With #423 we now can build images faster in GitHub Actions.

So basically cloned two repos we have that build apk packages into their own directories in this repo

• https://github.com/Islandora-Devops/isle-imagemagick -> imagemagick
• https://github.com/Islandora-Devops/isle-leptonica -> leptonica

Then updated docker-bake.hcl and our GHA to build those images.

[joecorall]

@nigelgbanks - if we were to do this, do you think nodejs would only trigger a rebuild (which takes ~2h) when something in the image gets bumped?

[nigelgbanks]

@joecorall yup it would, perhaps it's time to drop code-server? We should make a post on slack to see if it's actively used?

[nigelgbanks]

The caching is a bit hit or miss currently, I'm actively trying some new features to get it to be better. That being said, GitHub only has a local cache of 10GB for the whole repo (not per branch), and the image cache on docker hub doesn't capture the c++ compilation, it's only cached locally. So any time it needs to rebuild it will take forever.

[nigelgbanks]

https://islandora.slack.com/archives/CM6F4C4VA/p1747072958771069 I started a thread

[joecorall]

While we decide the future of code-server I went ahead and dropped nodejs from this PR to avoid the long build times. We maybe could just keep nodejs as-is in a separate repo. I suspect if we dropped codeserver that will take a lot of effort around documentation, isle-site-template, isle-dc, etc.

[nigelgbanks]

So far, the slack makes it look like no one uses it 🤷

[joecorall]

If we do end up removing it, which looks like we will, that will probably involve a bit of work Islandora/documentation#2361

i don't think that work needs to block this PR