Support running another command/container on the same node

[iamsaso]

Run multiple commands for a service as separate containers on the same node. This would allow us to use PODs to share volumes between 2 or more services.

In the interface/service there could be a + next to a command that adds another command field.
We should also support adding volume paths that containers are sharing...

[stale-bot]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.