Plone Intranet Quick Start (a) Docker-based OS setup

[pigeonflight (David Bain (dbain.com))]

@benson

So, "app" user never exists inside the container, I just wonder whether this is it or the docker build process runs into trouble creating "app" user.

Definitely boils down to a missing "app" user. The specifics of why that is would require more digging.