i want to use command: - wget to download a file and put in a volume gunzip since it is a gz format. but somehow the container fails as soon as i hit the kubectl apply -f command. the Pod status displays Error. what could i be doing wrong?

apiVersion: apps/v1
kind: Deployment
metadata:
  name: example-app
  labels:
    app: example-app
spec:
  replicas: 1
  selector:
    matchLabels:
      app: example-app
  template:
    metadata:
      labels:
        app: example-app
    spec:
      containers:
      - name: example-app
        image: docker.source.co.za/azp/example-app:1
        imagePullPolicy: Always
        command:
        - wget
        - "-O"
        - http://confluence.source.co.za/download/attachments/627674073/refpolicies.tar.gz
        volumeMounts:
        - name: example-app
          mountPath: /config/
          readOnly: true

      volumes:
      - name: example-app
        emptyDir: {}