save Usage: docker save [OPTIONS] IMAGE [IMAGE...]
Save one or more images to a tar archive (streamed to STDOUT by default)
--help Print usage
-o, --output="" Write to a file, instead of STDOUT
Produces a tarred repository to the standard output stream. Contains all parent layers, and all tags + versions, or specified repo:tag, for each argument provided. It is used to create a backup that can then be used with docker load $ docker save busybox > busybox.tar
$ ls -sh bu