Streamline startup

[zardus]

While writing ARCHITECTURE.md, I realized that the way we start the dojo is very convoluted (docker calls dojo init which calls dojo-init and then starts systemd, which in turn calls dojo up. I changed the startup flow to:

• Outer docker entrypoint is systemd
• Systemd has a dojo-init.service that calls dojo-init.
• After this, systemd has a dojo-up.service that calls dojo-up.

This makes things more sane, and also turns us into a two-stop-shop for the most important logs (journalctl for -u dojo-init and -u dojo-up and docker logs ctfd for ctfd logs).

[zardus]

Failing with:

ctfd               | docker.errors.APIError: 400 Client Error for http+docker://localhost/v1.47/containers/0503714327bde0a6d7d8658cca4a539f4faceca6f16ac8a94711d3973eeed3f2/start: Bad Request ("failed to create task for container: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: error during container init: error setting cgroup config for procHooks process: openat2 /sys/fs/cgroup/system.slice/docker-0503714327bde0a6d7d8658cca4a539f4faceca6f16ac8a94711d3973eeed3f2.scope/pids.max: no such file or directory: unknown")```

No idea why yet...

[zardus]

This is fucked.