The issue with a shared cloudbees account is to share your apache password (it's mandatory to commit to the svn path) . And to have it in clear in the console output. Perso I won't :-).
I haven't looked at the script yet, but how hard would it be to modify it to retrieve the password from somewhere else? We have a private mount in the CloudBees account which is, at least, not publicly accessible.
Thanks! ap
