Support docker contexts for remote hosts

[Sergey Petrov]

One can leverage docker contexts to manage remote docker host:

> docker context add my-remote-host ssh://[e-mail]

Now, all docker commands are being run in this remote server, even docker-compose and whatever.

Sadly, dockly can't do that. I suppose, it could — it might be even quite easy to integrate?

Hope to hear what you think!

[Omri Bar-Zik]

@neoromantic That sounds like a great idea! I have created a PR to implement this