Adding TTs suggestion

Co-authored-by: Tomas Tomecek <[email protected]>

openshift/README.md

@@ -62,7 +62,8 @@ make push-prod
 ```
 
 Alternatively, when working with github repo, the image can be published
-by simply creating a tag with name respecting [semver](https://semver.org/) convention.
+by simply creating a tag with name respecting [semver](https://semver.org/) convention
+and starting with 'v' prefix, i.e. `v0.0.4`.
 This will trigger github action in `docker-publish.yml`.
 
 New image will be created with the same tag and pushed to quay.io.