Fix ownership issues

builder/build-iso.sh

@@ -63,3 +63,8 @@ cp $build_cache_dir/pacman.conf "$build_cache_dir/airootfs/etc/pacman.conf"
 
 # Finally, we assemble the entire ISO
 mkarchiso -v -w "$build_cache_dir/work/" -o "/out/" "$build_cache_dir/"
+
+# Fix ownership of output files to match host user
+if [ -n "$HOST_UID" ] && [ -n "$HOST_GID" ]; then
+    chown -R "$HOST_UID:$HOST_GID" /out/
+fi