runtime/

Package docker runs each service as labelled containers on one network, so services reach each other by service name.

Package kind is the Kubernetes runtime on a local kind cluster, plus what only kind can do: create and delete the cluster with a local registry, load images, and shell into nodes with docker.

Package kubernetes runs services on a Kubernetes cluster through kubectl, so it uses whatever auth the user's kubeconfig has.

Package local runs services as processes on this machine.