Kubernetes runs fine on a single node, and scales to thousands. Lots of developers use a single node in a VM to develop apps locally. You wouldn't want to run

Kubernetes runs fine on a single node, and scales to thousands. Lots of developers use a single node in a VM to develop apps locally. You wouldn't want to run a single node in production, of course, because that defeats the point (and introduces a single point of failure). But there's nothing technically preventing you from doing it. As a Kubernetes user, I hope Docker as an application is going away, because it's increasingly in the way. Kubernetes would benefit from managing its containers with a more direct, more lightweight mechanism (like rkt or containerd).