From a stopped sandbox to a template, a tar, and a new sandbox
Top row, left to right: the stopped sandbox m101-demo with its marker file, sbx template save writes the image library/m101-tpl:v1 into the runtime image store, and --output exports it as the tar file m101-tpl.tar in OCI layout. Bottom row: sbx create --pull never -t m101-tpl:v1 makes m101-from-tpl from the store, with the marker file present, and a copy of the tar reaches another host where sbx template load imports it.
ON THE RECORDING MAC
m101-demo
sbx stop m101-demo
/opt/marker-from-demo
runtime image store
library/m101-tpl:v1
flavor shell
m101-tpl.tar
OCI layout
blobs/sha256/
m101-from-tpl
no workspace mount
/opt/marker-from-demo
another host
sbx template load
m101-tpl.tar
template save
stop first
--output
tar file
sbx create shell
--pull never -t m101-tpl:v1
copy
by hand
the load on another host follows the help text and is not recorded