If you want to push docker images to a given host, there is already everything in Docker to allow this. The following example shows how to push a docker image through ssh:
docker save <my_image> | ssh -C user@my.remote.host.com docker load
- docker save will produce a tar archive of one of your docker images (including its layers)
-Cis for ssh to compress the data stream- docker load creates a docker image from a tar archive
Note that the combination of a docker registry + docker pull command has the advantage of only downloading missing layers. So if you frequently update a docker image (adding new layers, or modifying a few last layers) then the docker pull command would generate less network traffic than pushing complete docker images through ssh.