Fix script execution when bash is not available

For runtimes where bash is not available put-ld-config-path and symlink-alternatives fail with error:

put-ldconfig-in-path | sh: 1: /tmp/script/put-ldconfig-in-path: not found

Running those script from outside of chroot fixes it.

Signed-off-by: Frédéric Danis frederic.danis@collabora.com