This repository contains an example Docker Compose configuration that serves Caddy over Tailscale using an approximation to sidecar pattern.
This have the benefits of not needing to use a privileged container, mounting TUN device, and using host network mode. The downside will be the need to create a new image.
Read the README.md in s6 directory.
TS_AUTH_KEYYour Tailscale auth key, generate one at https://login.tailscale.com/admin/settings/keysTS_PORTThe port Caddy listening at and Tailscale should proxy to. It defaults to 80 if empty.