Add doc about docker daemon in minikube tutorial (#7373)

* Added doc about docker daemon

* Addressed review comment

* adding on explanatory language for the command

docs/tutorials/stateless-application/hello-minikube.md

@@ -76,6 +76,12 @@ Determine whether you can access sites like [https://cloud.google.com/container-
 curl --proxy "" https://cloud.google.com/container-registry/
 ```
 
+Make sure that the Docker daemon is started. You can determine if docker is running by using a command such as:
+
+```shell
+docker images
+```
+
 If NO proxy is required, start the Minikube cluster:
 
 ```shell