fix logout from sso

templates/nginx-config.tmpl

@@ -74,6 +74,11 @@ server {
     # Pass PHP requests to the WordPress container (PHP-FPM)
     location ~ \.php$ {
         include fastcgi_params;
+
+        # Needed for logout from SSO
+        fastcgi_buffers 16 16k;
+        fastcgi_buffer_size 32k;
+
         fastcgi_pass wordpress;
         fastcgi_index index.php;
         fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;