How to automate restart of wsl2

[chfiii]

I run a cron job daily at noon to update my Linux instance. Occasionally it will require a restart to complete the update. The job that updates the system checks for the flag file (currently /var/run/meedsrestart) and notifies me. On my native Linux systems I use the "sudo shutdown -r now" command. Unfortunately in WSL2 I get
System has not been booted with systemd as init system (PID 1). Can't operate.
Failed to connect to bus: Host is down
Failed to talk to init daemon.

I get the same from /sbin/reboot.
Is there a way to get the same functionality?

Thanks!