apiVersion: v1
kind: Pod
  name: website
    - name: clone-repo
      image: alpine/git
        - git
        - clone
        - --progress
        - <https://github.com/peterj/simple-http-page.git>
        - /usr/share/nginx/html
        - name: web
          mountPath: "/usr/share/nginx/html"
    - name: nginx
      image: nginx
        - name: http
          containerPort: 80
        - name: web
          mountPath: "/usr/share/nginx/html"
    - name: web
      emptyDir: {}

Save the above YAML to init-container.yaml and create the Pod using kubectl apply -f init-container.yaml.

If you run kubectl get pods right after the above command, you should see the status of the init container:

$ kubectl get po
website   0/1     Init:0/1   0          1s

The number 0/1 indicates a total of 1 init containers, and 0 containers have been completed so far. In case the init container fails, the status changes to Init:Error or Init:CrashLoopBackOff if the container fails repeatedly.

You can also look at the events using the describe command to see what happened:

Normal  Scheduled  19s   default-scheduler  Successfully assigned default/website to minikube
Normal  Pulling    18s   kubelet, minikube  Pulling image "alpine/git"
Normal  Pulled     17s   kubelet, minikube  Successfully pulled image "alpine/git"
Normal  Created    17s   kubelet, minikube  Created container clone-repo
Normal  Started    16s   kubelet, minikube  Started container clone-repo
Normal  Pulling    15s   kubelet, minikube  Pulling image "nginx"
Normal  Pulled     13s   kubelet, minikube  Successfully pulled image "nginx"
Normal  Created    13s   kubelet, minikube  Created container nginx
Normal  Started    13s   kubelet, minikube  Started container nginx

You will notice as soon as Kubernetes schedules the Pod, the first Docker image is pulled (alpine/git), and the init container (clone-repo) is created and started. Once that's completed (the container cloned the repo) the main application container (nginx) starts.

Additionally, you can also use the logs command to get the logs from the init container by specifying the container name using the c flag:

$ kubectl logs website -c clone-repo
Cloning into '/usr/share/nginx/html'...
remote: Enumerating objects: 6, done.
remote: Counting objects: 100% (6/6), done.
remote: Compressing objects: 100% (4/4), done.
remote: Total 6 (delta 0), reused 0 (delta 0), pack-reused 0
Receiving objects: 100% (6/6), done.

Finally, to actually see the static HTML page can use port-forward to forward the local port to the port 80 on the container:

$ kubectl port-forward pod/website 8000:80
Forwarding from -> 80
Forwarding from [::1]:8000 -> 80

You can now use web view or open your browser at http://localhost:8000 to open the static page.


Delete the Pod by running kubectl delete po website.