Fix Caddy volume mount issue in Portainer

- Remove problematic Caddyfile volume mount that fails in Portainer
- Use Caddy's command-line reverse proxy mode instead
- This avoids file mounting issues while providing same functionality
- Caddy will auto-handle HTTPS/Let's Encrypt for the specified domain
- Simpler, more portable configuration for containerized deployments

docker/docker-compose.deploy.yml

@@ -112,11 +112,13 @@ services:
       - "80:80"
       - "443:443"
     volumes:
-      - ./Caddyfile:/etc/caddy/Caddyfile
       - caddy_data:/data
       - caddy_config:/config
     environment:
       DOMAIN: ${DOMAIN:-localhost}
+    # Use Caddy's reverse proxy command without file mounting
+    # This avoids Portainer file mount issues
+    command: caddy reverse-proxy --from "${DOMAIN:-localhost}" --to web:3000
     depends_on:
       - web
     networks: