Once DXR is running on the webheads, we can put them under continuous deployment. I have a working CD script (https://github.com/mozilla/dxr/blob/master/deploy.py), though it's geared at the moment to having a single webhead, and it does the build locally. That's all simple enough to change. Let's chat before you dive deeply into this, as I'm sure you have some CD kit you're used to using, and DXR has some weird needs w.r.t. index format compatibility and interaction with the DXR build box.
In place on dxradm; running CI deploys for prod and stage every 5 minutes a la the old environment as discussed on IRC. We can revisit when we need to make changes for the UI refresh or the stage index changes.