fix: add libc6-compat — required for dlopen of glibc shared objects on Alpine

gcompat alone provides only the ELF interpreter entry point (/lib64/ld-linux-x86-64.so.2).
It does NOT provide libpthread.so.0, libm.so.6, libdl.so.2, libc.so.6 stubs.

libnvidia-ml.so.590 has NEEDED: libpthread.so.0 etc. When nvidia-smi calls
dlopen("libnvidia-ml.so.1"), musl's linker fails to satisfy these deps
→ NVML_ERROR_LIBRARY_NOT_FOUND (exit 12), "couldn't find libnvidia-ml.so".

libc6-compat provides the missing stubs (libpthread.so.0, libm.so.6, libdl.so.2,
libc.so.6, librt.so.1) as musl redirects, enabling dlopen of glibc shared objects.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

iso/builder/genapkovl-bee.sh

@@ -47,6 +47,7 @@ less
 vim
 dialog
 gcompat
+libc6-compat
 EOF
 
 rc_add devfs sysinit

iso/builder/mkimg.bee.sh

@@ -53,5 +53,6 @@ profile_bee() {
         dialog
 
         gcompat
+        libc6-compat
     "
 }