mostly references to document in headscale/headscale

Important notes

the container build from default Dockerfile is based on distroless, which has no shell or such.

the container build from default Dockerfile has no /etc/headscale and /var/lib/headscale which will just make the container fails, you have to create it first or bind a volume on it.

you have to manually register the machine in cli, find a webui/cli tool or build on yourself :D.