Slot 3 is live. TLS terminated by Caddy → 192.168.0.56:8083
To publish static files: drop them in /srv/view3. They appear here immediately.
To run your own app on this slot instead:
sudo systemctl stop viewslot@3
# then bind YOUR app to 0.0.0.0:8083
# node: PORT=8083 node server.js
# docker: docker run -p 8083:3000 your-image
Bind to 0.0.0.0, not 127.0.0.1 — Caddy connects from another host.