Possible to pin a specific version of glibc

[hu13]

Hi there.

I use this to compile our golang app for linux. And currently, the app is run on ubuntu 20.04 which only has glibc v2.31.
The newer golang-cross image has glibc v.2.36 according to ldd --version

0.169 ldd (Debian GLIBC 2.36-9+deb12u3) 2.36
0.169 Copyright (C) 2022 Free Software Foundation, Inc.
0.169 This is free software; see the source for copying conditions.  There is NO
0.169 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
0.169 Written by Roland McGrath and Ulrich Drepper.

I am exploring the option for our linux users to upgrade their glibc. But that may not be possible, so i wonder if you have any suggestions on whether i can manage to pin a specific glibc version to docker builder?

Thanks

[gythialy]

I guess we can't specify the version of glibc, but we can specify the version of Ubuntu. I can add a build-arg to specify the version of Ubuntu, e.g. bookswarm or bulleye to indirectly specify the version of glibc when build the builder image.

[hu13]

@gythialy i would appreciate that feature.