apiVersion: v1
kind: Pod
metadata:
 name: busybox
spec:
 containers:
 - image: busybox
   name: busybox
   command: ["/bin/sh"]
   args: ["-c", "sleep 600"]
   env:
   - name: myusername
     valueFrom:
      secretKeyRef:
       name: secret-demo
       key: username
