apt-key add doesn't work on debian bullseye

[fbernier]

my UDM-pro is on Unifi-OS 3.2.12 which uses debian bullseye. The install.sh script fails with the following:

root@UDMPRO-Chambord:~# curl -sSLq https://raw.github.com/SierraSoftworks/tailscale-udm/main/install.sh | sh
Installing latest Tailscale package repository key...
Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d instead (see apt-key(8)).
OK
Updating package lists...
Hit:1 https://security.debian.org/debian-security bullseye-security InRelease
Hit:2 https://deb.debian.org/debian bullseye InRelease
Hit:3 https://deb.debian.org/debian bullseye-updates InRelease
Hit:4 https://deb.debian.org/debian bullseye-backports InRelease
Hit:5 https://apt.artifacts.ui.com bullseye InRelease
Hit:6 https://apt-release-candidate.artifacts.ui.com bullseye InRelease
Hit:7 https://apt-beta.artifacts.ui.com bullseye InRelease
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
15 packages can be upgraded. Run 'apt list --upgradable' to see them.
Installing Tailscale 1.58.2...
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
E: Unable to locate package tailscale

As you can see, there's a line about apt-key being deprecated. The tailscale install instruction changed between stretch and bullseye. The script works after using the new instructions to add the key. I do not know if these new instructions would work for debian stretch too.

[notheotherben]

Thank you, I have assembled a fix for this and I'll try to get a release out ASAP.