k 8 sでbusyboxを起動

apiVersion: apps/v1beta1
kind: Deployment
metadata:
  name: app
spec:
  replicas: 10
  template:
    metadata:
      labels:
        run: app
    spec:
      containers:
      - name: app
        image: busybox        #   linux     ，     
        args:
        - /bin/sh
        - -c
        - sleep 10; touch /tmp/healthy; sleep 30000
        readinessProbe:           #    
          exec:
            command:
            - cat
            - /tmp/healthy
          initialDelaySeconds: 10         #10s         
          periodSeconds: 5                #         5s