Add noindex header to fediverse apps

src/freedombone-utils-web

@@ -1384,6 +1384,11 @@ function update_user_agent {
         return
     fi
 
+    if ! grep -q 'add_header X-Robots-Tag "noindex, follow"' "/etc/nginx/sites-available/$domain"; then
+        sed -i '/server_name/a add_header X-Robots-Tag "noindex, follow" always;' "/etc/nginx/sites-available/$domain"
+        systemctl restart nginx
+    fi
+
     if ! grep -q 'http_user_agent' "/etc/nginx/sites-available/$domain"; then
         sed -i '/server_name/a }' "/etc/nginx/sites-available/$domain"
         sed -i '/server_name/a return 403;' "/etc/nginx/sites-available/$domain"