No, you have to build Caddy with plugins. We provide xcaddy to make it easy. Sign up for notifications on github for releases, and just write yourself a tiny bash script to build the binary with xcaddy, and restart the service. You could potentially do a thing where you hook into apt to trigger your script after Caddy's deb package version changes, idk. But it's up to you to handle.
Because that's not automated, it's a manual command and uses caddyserver.com resources (relatively low powered cloud VMs) with no uptime guarantees. It _should not_ be used in automation scenarios, only for quick manual personal use scenarios.
