feat: _ server name

nginx.conf

@@ -1,5 +1,6 @@
 server {
     listen 80;
+    server_name _;
 
     location / {
         root /usr/share/nginx/html;
@@ -42,4 +43,4 @@ server {
         proxy_intercept_errors on;
         error_page 502 503 504 /50x.html;
     }
-}
+}