Can't use the "host" variable as the tag. Workaround that with YAML
anchors (ugly but works).

- New version.
- pre-commit.
- GitLab CI/CD.
- Always pull new images.

Needed for easier mounting using `--volumes-from` to acces the files
when running another container (launching a container from inside a
container, for an example see the CI from
https://git.shore.co.il/nimrod/resume).

Set the runners to run untagged jobs (I only enabled tagging to run
specific jobs in specific runners, the untagged jobs should still run
wherever).

Move the runner specific files to the `runner` directory.

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).