Merge pull request #5863 from kgolab/vpa-release-doc

Clarify and simplify the "build and stage images" step.

vertical-pod-autoscaler/RELEASE.md

@@ -45,8 +45,20 @@ We use the issue to communicate what is state of the release.
 
 ## Build and stage images
 
+Create a fresh clone of the repo and switch to the `vpa-release-0.${minor}`
+branch. This makes sure you have no local changes while building the images.
+
+For example:
+```sh
+git clone git@github.com:kubernetes/autoscaler.git
+git switch vpa-release-0.14
+```
+
+Once in the freshly cloned repo, build and stage the images.
+
 ```sh
-for component in recommender updater admission-controller ; do REGISTRY=gcr.io/k8s-staging-autoscaling TAG=[*vpa-version*] make release --directory=pkg/${component}; done
+cd vertical-pod-autoscaler/
+for component in recommender updater admission-controller ; do TAG=`grep 'const VerticalPodAutoscalerVersion = ' common/version.go | cut -d '"' -f 2` REGISTRY=gcr.io/k8s-staging-autoscaling make release --directory=pkg/${component}; done
 ```
 
 ## Test the release
@@ -156,4 +168,4 @@ sure nothing we care about will break if we do.
 
     A member of the
     [autoscaler-admins](https://github.com/orgs/kubernetes/teams/autoscaler-admins)
-    can add you to add you as a collaborator.
+    can add you to add you as a collaborator.