A clean 1.3 image is starting to work.  I would still like to see Jenkins create Seaside-enabled images, because the download times can be significant, and I have experienced intermittent failures that might be due to down servers, etc.

My most recent attempt choked at one point, but I *think* that's because my attempt to load Magritte might be flawed.  I might tweak Migrate (my own answer to building images) to save after critical steps in the hope of avoiding lots of lost time when things don't go well.

Bill