We run it (Docker Swarm) extensively inhouse at $dayjob, it runs loads of core services that are critical to operations. It's never given us any grief and is very easy to manage and maintain.
If the complexity ever gets to the point that k8s is justified we'll move there, but you can get a lot of work done with the much simpler Swarm.
Docker Swarm usage here in production. Mainly a regulatory and compliance constraint, but it is relatively simple compared to other container orchestration platforms.
It runs very well on resumes. Seriously, I interviewed a guy last night and he wants 400k a year. I asked why, he said it because he is a container expert.
Apparently I am underpaid and this must be in the valley, right? That should be standard technology for an SRE by now. I have been using Docker since 2013, and I rarely encounter developers who don't have at least basic knowledge.
Once you dive really deep into Kubernetes with service meshes etc., that's where it gets interesting.
