Splitting out the cli command into parts.

Signed-off-by: Mary Anthony <mary@docker.com>
Upstream-commit: 561bfb268de3c674b04d48895b7e46ae890ef795
Component: engine

components/engine/docs/reference/commandline/export.md

@@ -0,0 +1,38 @@
+<!--[metadata]>
++++
+title = "export"
+description = "The export command description and usage"
+keywords = ["export, file, system, container"]
+[menu.main]
+parent = "smn_cli"
+weight=1
++++
+<![end-metadata]-->
+
+# export
+
+    Usage: docker export [OPTIONS] CONTAINER
+    
+      Export the contents of a filesystem to a tar archive (streamed to STDOUT by default).
+
+      -o, --output=""    Write to a file, instead of STDOUT
+
+      Produces a tarred repository to the standard output stream.
+
+
+ For example:
+
+    $ docker export red_panda > latest.tar
+
+   Or
+
+    $ docker export --output="latest.tar" red_panda
+
+The `docker export` command does not export the contents of volumes associated
+with the container. If a volume is mounted on top of an existing directory in
+the container, `docker export` will export the contents of the *underlying*
+directory, not the contents of the volume.
+
+Refer to [Backup, restore, or migrate data
+volumes](/userguide/dockervolumes/#backup-restore-or-migrate-data-volumes) in
+the user guide for examples on exporting data in a volume.