I use an environment variable to set the port used by the local server that I want to test. I do this because we want to be able to build/test the hudson job on multiple slave nodes at the same time. We currently have those slave nodes running on the same machine. If the port is hard coded then I can't startup multiple local servers at the same time because the port will be the same for each and will conflict.

So it would be helpful if the sauce-ondemand plugin would allow using environment variables for the "Local Port" setting.