It’s not a “normal” vpn client. It allows you to create a network in your server using a variety of vpn providers so other containers can use it to connect to the internet. You use tailscale to connect to your server from outside home, but you use gluetun for your containers to connect to the outside world without exposing your real IP.

So yes, tailscale and gluetun are compatible and can live together (I use both on my homeserver)

Next pandemic is gonna be a lot of fun to watch from the other side of the planet 🤦