I am adding a new configuration file in apache /etc/apache2/conf-enabled/headers.conf
but I see no effect on the front end, is Virtualmin blocking something?
file I am adding: https://github.com/h5bp/server-configs-apache/blob/master/dist/.htaccess
running this command did not do the trick
sudo a2enmod setenvif headers deflate filter expires rewrite include
I had to check the boxes individually in the webmin/server/apache web server