fixing http issue in default nginx config

docker/config/nginx/conf.d/default.conf

@@ -54,6 +54,9 @@ server {
         listen [::]:80 default_server;
         server_name localhost;
 
+        root /usr/share/nginx/html;
+        index index.html;
+
         location @proxy {
                 proxy_set_header Host $http_host;
                 proxy_set_header X-Real-IP $remote_addr;