Yes, I know so much of Alpine's lightweightness comes from not using glibc.
But still, the other options I see are far from being slimmed down. Debian, Ubuntu server, CentOS... They all could use some cuts.
What's the most slimmed down non-desktop distro that still has a glibc base? I honestly don't care if it has its own package manager (build tool handles this for me). Just wanna use it in containers for running server apps.
Gentoo can be made very slim, and has similarities with Alpine. Also as others have said, Arch is very customisable, and Void is the new hotness in this area.
You could also use Void Linux with glibc but install base-minimal instead of base-system when following this guide: https://docs.voidlinux.org/installation/guides/chroot.html
They also have a docker image using busybox (the other thing that makes alpine that minimal). So you could have a look at how they setup it and try that yourself. It is not well tested tho, so it's probably not a good idea for a server.
You messed with Debian's netinstall images? Just enough for you to get on-line and apt-get the packages you acually want, although the ISO does about take up a whole CDR.
I'm running this on a low resource arm64 device. I have had trouble cross compiling to arm64 musl (availability of pre compiled binaries is low).
It also caused me a bunch of random small issues. For example nodejs doesn't officially support musl binaries. Bunch of random small things, like sdkman not working on musl.
Yes, weird corner cases in musl cause a lot of things to misbehave when run on musl. For example, DNS upgrade to TCP, which is required for certain queries and covered by one of the DNS RFCs, wasn't implemented in musl for the longest time, although I think it finally got implemented recently. However, there are other cases like this fwiu.
I know there is a way to install glibc in alpine. Worked for my admittedly hobbyist use case. I just don't remember the package name but it's in there.
Honestly, of you don't need to game, alpine is pretty great. Now if you absolutely need glibc... just use Arch, it's the most lightweight sane person distro I can think of, unless you wanna compile Gentoo that is