Deployed via http://www.evoila.de/cloud-foundry/adding-diego-release-to-cloud-foundry-release-v212/?lang=en (with v214 and 1398).(thanks for the write up) All deployed.
Sample go app, pushed and diego enabled, started.
--logs show the healthchecks, stop/start creating container etc.

A cf docker-push, enable-diego, cf start results in
FAILED Server error, status code: 400, error code: 320003, message: Docker support has not been enabled.

Pointer to research the problem or that simple manifest tweak to make all work would be greatly appreciated.

Thanks,
Tom