A momentarily unavailable registry on a side service's image no longer fails an…

v0.23.1-beta

A momentarily unavailable registry on a side service's image no longer fails an application's deployment. The previous fix pulled side services' images on the same path as the application's, where the slightest failure cancels everything. A project declaring a managed cache or storage could therefore see an application's deployment fail for a reason that did not concern it. Side services now fetch their image at start time, and a failure stays visible in the deployment log without interrupting the rest.