I agree that most of the issues we encountered were early bugs that have been resolved. While Docker 1.12 and 1.13 had some stability issues with services, it was early and they’ve been addressed. Swarm has been really stable for us since then.

I’ve written and shipped a container scheduler/orchestration runtime that’s being used today for some enterprise workloads. It’s a hard problem, and Swarm, Kubernetes and nomad are are solving it well.

Swarm is often overlooked as a production grade platform, but it’s absolutely production grade.