fix: replace Nginx with Caddy to fix "premature close" error while downloading larger files

Caddyfile

@@ -0,0 +1,15 @@
+:3000 {
+    # Reverse proxy for /api
+    reverse_proxy /api/* http://localhost:8080 {
+        header_up X-Forwarded-Host {host}:{server_port}
+        header_up X-Forwarded-For {remote_host}
+        header_up X-Forwarded-Proto {scheme}
+    }
+
+    # Reverse proxy for all other requests
+    reverse_proxy http://localhost:3333 {
+        header_up X-Forwarded-Host {host}:{server_port}
+        header_up X-Forwarded-For {remote_host}
+        header_up X-Forwarded-Proto {scheme}
+    }
+}