Merge pull request #762 from rhatdan/kpod-cp

Add man page for kpod-cp.1

docs/kpod-cp.1.md

@@ -0,0 +1,46 @@
+% kpod(1) kpod-cp - Copy content between container's file system and the host
+% Dan Walsh
+# kpod-cp "1" "August 2017" "kpod"
+
+## NAME
+kpod-cp - Copy files/folders between a container and the local filesystem.
+
+## Description
+We chose not to implement this feature in kpod even though the upstream docker
+project has it. We have a much stronger capability.  Using standard kpod-mount
+and kpod-umount, we can take advantage of the entire linux tool chain, rather
+then just cp.
+
+If a user wants to copy contents out of a container or into a container, they
+can execute a few simple commands.
+
+You can copy from the container's file system to the local machine or the
+reverse, from the local filesystem to the container. 
+
+If you want to copy the /etc/foobar directory out of a container and onto /tmp
+on the host, you could execute the following commands:
+
+	mnt=$(kpod mount CONTAINERID)
+	cp -R ${mnt}/etc/foobar /tmp
+	kpod umount CONTAINERID
+
+If you want to untar a tar ball into a container, you can execute these commands:
+
+	mnt=$(kpod mount CONTAINERID)
+	tar xf content.tgz -C ${mnt}
+	kpod umount CONTAINERID
+
+One last example, if you want to install a package into a container that
+does not have dnf installed, you could execute something like:
+
+	mnt=$(kpod mount CONTAINERID)
+	dnf install --installroot=${mnt} httpd
+	chroot ${mnt} rm -rf /var/log/dnf /var/cache/dnf
+	kpod umount CONTAINERID
+
+This shows that using `kpod mount` and `kpod umount` you can use all of the
+standard linux tools for moving files into and out of containers, not just
+the cp command.
+
+## SEE ALSO
+kpod(1), kpod-mount(1), kpod-umount(1)