How to copy Docker images from one host to another without using a repository

Question

How do I transfer a Docker image from one machine to another one without using a repository, no matter private or public?

I create my own image in VirtualBox, and wh

Answer 1

You can use a one-liner with DOCKER_HOST variable:

docker save app:1.0 | gzip | DOCKER_HOST=ssh://user@remotehost docker load