I want to set up a CI environment for a python project. The bamboo Amazon image does have python (although you have to configure it as a command) but it doesn't have all the extra python modules that a need installed. If I add these modules using a setup script, does that mean that every time an image is restarted (which as I understand it will happen if no build has been executed in the last ten mins or so), this script will need to be rerun? It's going to take a bit of time to download and install all the modules, so if that is the case, I'd rather set up a custom image.