Add Docker (copyparty) and Caddy config

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

README.md

@@ -36,6 +36,7 @@ Documentation and configuration reference for the Juris remote server.
 |--------------|----------|---------|
 | 443 | → LXD proxy → xray container | Xray VPN (VLESS+XHTTP+Reality) |
 | 16627 | → LXD proxy → xray container | x-ui admin panel |
+| 3999 | → Caddy → Docker copyparty (3923) | File sharing |
 | 22 | 22 | SSH |
 
 ## LXD
@@ -93,6 +94,42 @@ lxc exec xray -- systemctl restart x-ui
 lxc exec xray -- journalctl -u x-ui -f
 ```
 
+## Docker
+
+### copyparty
+
+File sharing server running in Docker.
+
+| Setting | Value |
+|---------|-------|
+| Image | `copyparty/ac:latest` |
+| Container name | `copyparty` |
+| Port | `3923` (host) → `3923` (container) |
+| Data | `/mnt/data/shared` (408GB) |
+| State | Running (healthy), up 3 weeks |
+
+```bash
+sudo docker ps
+sudo docker logs copyparty
+sudo docker restart copyparty
+```
+
+## Caddy
+
+Config: `/etc/caddy/Caddyfile`
+
+```
+share.alogins.net:3999 {
+    reverse_proxy localhost:3923
+}
+```
+
+Caddy handles TLS termination for the copyparty file server. Traffic flow:
+
+```
+share.alogins.net:3999 → Caddy (TLS) → localhost:3923 → Docker copyparty → /mnt/data/shared
+```
+
 ## Xray VPN Configuration
 
 See [ai-xray repo](http://localhost:3000/alvis/ai-xray) for full benchmark and config details.