feat: update install guide

Author: chen-keinan

README.md

@@ -66,14 +66,6 @@ Execute tests and generate failure tests report
 ./kube-beacon -r
 ```
 
-## Kube-beacon as Docker
-
-Execute kube beacon via docker 
-
-```
-docker run --pid=host  -v /etc:/etc:ro -v /var:/var:ro -v /*/cni/*:/*/cni/* -v $HOME/.kube:/root/.kube:ro -v $(which kubectl):/usr/bin/kubectl -t chenkeinan/kube-beacon
-```
-
 ## Kube-beacon as pod in k8s
 
 - Execute kube beacon as a pod in k8s cluster