Ostree manual deployment

Has anyone experience with manually deploying the OS?
I am looking for something like this:

  1. Format USB drive to 1G /boot and rest /
  2. mount /dev/sdb1 /var/mnt/usb/ && mount /dev/sdb2 /var/mnt/usb/boot
  3. from your system ostree repo /sysroot/ostree (?):
    a) sudo ostree admin deploy rawhide /var/mnt/usb/
    b) install bootloader to /dev/sdb ostree style command?
  4. boot usb.