Using these instructions you can replace the default file selector for news teaser images with a direct upload button. This upload button is implemented using the terminal42/contao-fineuploader
extension.
First install the extension via the Composer package management for Contao (Packagist: terminal42/contao-fineuploader). Then insert the following content into contao/dca/tl_news.php
:
$GLOBALS['TL_DCA']['tl_news']['fields']['singleSRC']['inputType'] = 'fineUploader';
$GLOBALS['TL_DCA']['tl_news']['fields']['singleSRC']['eval'] = [
'storeFile' => true,