Combine Docker Swarm and Kubernetes
Update: Docker just released support for Kubernetes as scheduler, which changes the situation and makes Kubernetes just an alternative scheduler to Docker Swarm. 

TL;DR: DON'T DO IT. Engineers always try to create these dog-pigs. Every unnecessary technology you bring will bring another whole set of faults. If you can pick one, then pick one and be happy you don't have to do both. If you like to play with Kubernetes, just get a private account on Google Cloud and play with it as much as you like. But don't make everyone at your company suffer through unnecessary complications.

Those are two parallel and mostly equivalent technologies. If your business had legitimate business reason to deploy in multiple Cloud providers for reliability for example and wanted to deploy into both AWS ECS (Elastic Container Service - based on Docker) and Google GKE (Container Engine - based on Kubernetes) and you were asking how do you build a pipeline, which would build your software and package in containers for deployment in both, that would be something else, but doing it just because you want to play with a new technology is very irresponsible.