Assets are not being loaded over HTTP/HTTPS

When an installation is migrated to a server (i.e. staging, test), files might be requested by WordPress over HTTP, and fail to load because of this. To fix this, the following code needs to be added at the top of the wp-config.php file in the _scripts/build/[PROJECTNAME].[PREFIX].dpdk.com folder:

$_SERVER['HTTPS'] = 'on';
$_SERVER['SERVER_PORT'] = 443;

if (isset($_SERVER['HTTP_X_FORWARDED_HOST'])) {
    $_SERVER['HTTP_HOST'] = $_SERVER['HTTP_X_FORWARDED_HOST'];
}

define('FORCE_SSL_ADMIN', true);
define('FORCE_SSL_LOGIN', true);