Tailscale on MacOS - How to set TS_PERMIT_CERT_UID?

By following the steps on the Caddy page linked below, I was able to set up Tailscale’s automatic HTTPS certificate fetching on a Linux host.

On my Mac laptop, which has Tailscale (version 1.36.0) installed, I’m attempting to accomplish the same thing.

However, I don’t know where the TS_PERMIT_CERT_UID should be initialized, as there is no /etc/default/tailscaled on MacOS.

Any recommendations?

Thank you!