feat: add blog_options and rss feed generation

nginx/nginx.conf

@@ -49,6 +49,10 @@ http {
           try_files $uri @app;
         }
 
+        location /rss.xml {
+          root /usr/share/nginx/rss;
+        }
+
         location @app {
             proxy_pass http://app_servers;
             proxy_set_header Host $host;