add Caddyfile for testing

Caddyfile

@@ -0,0 +1,18 @@
+{
+	auto_https off
+}
+
+:8080 {
+	root * ./result/public
+	encode gzip
+	file_server
+
+	# redirect to your custom 404 page
+	handle_errors {
+		@404 {
+			expression {http.error.status_code} == 404
+		}
+		rewrite @404 /404.html
+		file_server
+	}
+}