Over a few sessions, @papiris:data.coop and I
pooled our knowledge and experience into
[this pad](https://pad.data.coop/SCAk4RQhRBy84SylWQehIQ?view).
This commit creates a How-To Guide,
describing what we know so far about
multinode setups. Meaning: 1 or more manager node,
with 1 or more worker nodes in a docker swarm.
Amras