Run the docker-clean image daily. Remove failed builds and such.

Tag with the runner name (useful for deployments so I don't have to copy
files over SSH).

On host01.shore.co.il or different hosts.

Otherwise this creates multiple runners in the same container.

Can be easily deployed on different hosts by setting different
environment variables (need to document them). No testing/ linting of
any kind (need to do that as well).