[create a Namespace named dev]
$ kubectl create namespace dev

[create the Deployment]
$ kubectl create -f Deployment.yaml

[check the Deployment status]
$ kubectl get deployments -n dev

[create the Service]
$ kubectl create -f Service.yaml

[create the Ingress]
$ kubectl create -f Ingress.yaml

[check the brief details of Ingress]
$ kubectl describe ingress -n dev
