sidecar

apiVersion: v1
kind: Pod
metadata:
  name: nginx-latest
spec:
  volumes:
    - name: html-data
      emptyDir: {}
  containers:
    - name: nginx-latest-container
      image: nginx:latest
      ports:
      - containerPort: 80
      volumeMounts:
      - name: html-data
        mountPath: /usr/share/nginx/html

    - name: busybox-sidecar
      image: busybox:latest
      volumeMounts:
      - name: html-data
        mountPath: /pod-data
      command: [ "/bin/sh" ]
      args: ["-c", "while true; do date >> /pod-data/index.html; sleep 1; done"]