Kubectl in a scratch Docker image.
Available at: https://hub.docker.com/r/buoyantio/kubectl/
docker run buoyantio/kubectl:latest
docker build -t buoyantio/kubectl:latest .
Build latest stable Kubernetes version
K8S_VERSION=$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)
docker build -t buoyantio/kubectl:$K8S_VERSION --build-arg K8S_VERSION=$K8S_VERSION .