Wonderful, thank you!
At the same time the Tailscale app should allow /var/run/tailscale to be stored on a host dataset. This is required for some kinds of certificate automation, so that the Tailscale socket can be shared with other containers who will request certificates over /var/run/tailscale/tailscaled.sock.
Feature request: Tailscale TrueNAS app: make /var/run/tailscale volume configurable to allow other containers to automate certificates