CUstom data loader for using remote images

Preconditions

1. PHP 8.1
2. Symfony 5.4
3. Last version of Liips bundle
4. GD library

Steps to reproduce

I try to create my own custom data loader to apply filters with remote images.

In the file services.yaml

app.imagine.cdn_data_loader:
        class: App\Domain\RemoteStreamLoader
        arguments:
            - '@liip_imagine'
        tags:
            - { name: 'liip_imagine.binary.loader', loader: 'cdn_data_loader' }

Then the file RemoteStreamLoader.php

use App\Domain;

use Liip\ImagineBundle\Binary\Loader\LoaderInterface;
use Imagine\Image\ImagineInterface;

class RemoteStreamLoader implements LoaderInterface
{
    protected $imagine;

    public function __construct(ImagineInterface $imagine)
    {
        \dump($imagine); die();
        $this->imagine = $imagine;
    }

    public function find($path)
    {
        \dump("find"); die();
        // The http:// becomes http:/ in the url path due to how routing urls are converted
        // so we need to replace it by http:// in order to load the remote file
        $path = preg_replace('@\:/(\w)@', '://$1', $path);
        return $this->imagine->load(file_get_contents($path));
    }
}

Then my liips filter configuration :

liip_imagine:
    # valid drivers options include "gd" or "gmagick" or "imagick"
    driver: "gd"
    data_loader: "cdn_data_loader"

    # configure resolvers
    resolvers:
        # setup the default resolver
        default:
            # use the default web path
            web_path: ~

    filter_sets:
        # use the default cache configuration
        cache: ~

        # name our filter set "my_thumb_filter"
        thumbnail_filter:
            filters:
                # use and setup the "thumbnail" filter
                thumbnail:
                    # set the thumbnail size to "32x32" pixels
                    size: [32, 32]
                    # crop the input image, if required
                    mode: outbound

And then I use the filter in Twig view
<img src="{{ ImageUrlPath | imagine_filter('thumbnail_filter') }}" class="rounded-circle" />

Expected result

The image does not appear and my custom data filter RemoteStreamLoader is not called

What is wrong ?

Thanks,

Start by tracing the service definition in services.yaml through RemoteStreamLoader.php, then verify how the Twig imagine_filter call selects the configured data loader. Reproduce the Symfony 5.4 setup with the shown GD configuration and determine why find() is not reached. Done means the remote-image filter path invokes the custom loader or the issue clearly documents the required configuration change.