Changes the order of post-install scripts && uses run_command to run post-install scripts

live_exam_os/build.sh

@@ -261,7 +261,8 @@ fi
 
 echo "[Post-install...]"
 for script in config/03-post_install/*.sh; do
-  ./"$script"
+  echo " [Running $script...]"
+  run_command "$script"
 done
 
 echo "[Moving kernel...]"