$ npm install
$ npm run start
$ docker build -t gcr.io/opencenus-node/nodejs-docker-app:v1 .
$ docker push gcr.io/opencenus-node/nodejs-docker-app:v1
kubectl apply -f deployment.yaml
kubectl get deployments
kubectl get pods
kubectl exec -it <pod_name> bash
kubectl set image deployment/nodejs-docker-deployment my-app=nodejs-docker-app:v2