Setting the Magento application mode
The my_mage_mode
embedded variable controls the application mode that Magento uses.
For stores using Magento 2, this variable will be set to default
by default.
To update this value, edit ___general/example.com.conf
(where example.com is your chosen domain), and add
set $my_mage_mode production;
(Replacing production
with the value you'd like, if necessary)
Then restart Nginx by running /etc/init.d/nginx reload
.