A Flarum extension. Add an image gallery to Flarum directly from Flickr
Register on Flickr to get your free Api Key, then paste the api key into the admin panel. Now you can create your own gallery into flickr and after that simply copy your gallery ID into admin panel too.
https://www.flickr.com/photos/flickr/galleries
Install with composer:
composer require justoverclock/image-gallery:"*"
composer update justoverclock/image-gallery:"*"
php flarum cache:clear