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.
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.