Commands:
Starting minikube
minikube start --driver docker
deploing yaml files
kubectl apply -f mongo-secret.yaml
kubectl apply -f mongo.yaml
kubectl apply -f mongo-configmap.yaml
kubectl apply -f mongo-express.yaml
get external IP address of mongo-express
minikube service mongo-express-service
get external IP address of app
minikube service app-svc
get the IP address by
minikube service list