Custom Skins being overwritten when OSMC updates

Ok I did that. getting an error when I try and run the script ./skin.sh
osmc@osmc_vero4:~$ ./skin.sh
rsync: failed to set times on “/usr/share/kodi/addons/skin.estuary/xml/.”: Operation not permitted (1)
rsync: mkstemp “/usr/share/kodi/addons/skin.estuary/xml/.testing.txt.yn7XqI” failed: Permission denied (13)
rsync error: some files/attrs were not transferred (see previous errors) (code 23) at main.c(1196) [sender=3.1.2]

if I run sudo ./skin.sh it works though.

ah… I was creating a cron for the osmc user but if I do a sudo crontab -e (not cron -e) I can add the script to the root user cron.

Apologies for that, Will correct in post