Fix build on x86_64-unknown-linux-musl because of missing zlib.

[orium]

The failure was:

  = note: /usr/lib/gcc/x86_64-alpine-linux-musl/13.2.1/../../../../x86_64-alpine-linux-musl/bin/ld: cannot find -lz: No such file or directory
          collect2: error: ld returned 1 exit status

This PR also updates rust and alpine.

For my future reference. To test builds locally do

docker build -t dev-rust-build.action . && docker run  -e GITHUB_REPOSITORY=orium/cargo-rdme -e GITHUB_WORKSPACE=/rust/build/workspace -e RUSTTARGET=x86_64-unknown-linux-musl -v ~/programming/projects/cargo-rdme/:/rust/build/workspace -ti --entrypoint /bin/bash dev-rust-build.action

Closes #100

[orium]

@Douile Can you take a look when you have time?

[Douile]

Could you link to a log where a build fails because of zlib please.

[orium]

Could you link to a log where a build fails because of zlib please.

Yes: https://github.com/orium/cargo-rdme/actions/runs/11489666325/job/31978894158

I've also updated the PR to use rust 1.82.

[orium]

@Douile Hi. Can you take a look at the log/PR when you have time?

[orium]

It seems this PR does not fix the issue (https://github.com/orium/cargo-rdme/actions/runs/11713088614/job/32625153289).

I'll look at this soon.

[orium]

Found the issue. The current PR does solve the problem: for some reason even though I pointed to orium/rust-build.action it still used the original docker image.

The problem is the git2 dependency that I have in cargo-rdme. git2 needs zlib-static to be installed.

[Douile]

If its for a dependency of a crate I don't think it should go in the base image: a pre-build script can be used to install crate dependencies.

[orium]

If its for a dependency of a crate I don't think it should go in the base image: a pre-build script can be used to install crate dependencies.

That's what I did in orium/cargo-rdme@79b8d25. One one hand I tend to agree that dependencies on system libraries that crates have are out of scope. On the other hand there should be at least a minimum system installation crates should count on. I would say something like libz may arguably be part of that minimum installation.

I think at least rust-build should offer a simple way to install extra packages that do not require a pre-build script. I'm thinking an environment variable where people can define a set of packages to install. What do you think? I'm happy to change this PR to add a EXTRA_PACKAGES or something like that (please feel free to suggest a better name).