[Docs] List known Alpine issues

[KDederichs]

Hey,

I was wondering if it was possible to list what exactly the known issues mentioned in https://github.com/dunglas/symfony-docker/blob/main/docs/alpine.md are.

I feel like it would help users with the decision if they should use Alpine or not.

[maxhelias]

If I have understood correctly the problem is that Alpine and Debian use different C standards: musl on Alpine vs glibc on Debian, and PHP depends heavily on this.
As mentioned here: #555 it creates instabilities with PHP because it hasn't tested with musl.
IMO, the real question is why do you use Alpine? Is it representative of your production environment?

Note: I'm not sure if we can or want to add a note to answer this issue.

[dunglas]

See this thread for some details: https://x.com/dunglas/status/1767846666638430356?s=20