Check docker alpine musl version
libc itself is an executable. You can run it and the usage message will print out the version:
/ # /lib/libc.musl-x86_64.so.1musl libc (x86_64)Version 1.1.24Dynamic Program LoaderUsage: /lib/libc.musl-x86_64.so.1 [options] [--] pathname [args]