Kubernetes: Pre-pull images into node

prepull.yaml

apiVersion: apps/v1beta1
kind: DaemonSet
metadata:
  name: prepull
spec:
  selector:
    matchLabels:
      name: prepull 
  template:
    metadata:
      labels:
        name: prepull 
    spec:
      initContainers:
      - name: prepull 
        image: docker
        command: ["docker", "pull", "hello-world"]
        volumeMounts:
        - name: docker
          mountPath: /var/run
      volumes:
      - name: docker
        hostPath:
          path: /var/run
      containers:
      - name: pause
        image: gcr.io/google_containers/pause