Nc-automount not found

hi every body,
On raspberry 3B+ i install hyperiot docker os and nextcloudpi image on container (i use sd card) and it work well. Now i want to change data drive (i want to put ncp data on usb drive) but when i look for nc-umount, nc-data and nc-datadir and most others commands i dont found them when i use nc-config command or in the webui.
thank’s for your helps