Find a way to ensure we can have Docker images that are regularly executed, that have just enough build dependencies installed to build and test a piece of software, so that they do not occupy too much disk space for the in-memory tmpfs our Atomic hosts are using.

Suggestions;

• Run a yum-builddep or equivalent during the compose of the Docker image.
• Possibly split Docker images in to categories (server / desktop comes to mind).
• Leave the building to OBS, albeit we cannot wait for this process to complete as it is asynchronous.