CaracoleSkeleton/config/dependencies.php

<?php

namespace Symfony\Component\DependencyInjection\Loader\Configurator;

return function(ContainerConfigurator $configurator) {

    $services = $configurator->services();

    $baseDirectoryDependency = dirname(__FILE__).'/../src/Dependency/';
    $directoriesDenpendencyInjection = scandir($baseDirectoryDependency);
    $dependencies = [];
    foreach($directoriesDenpendencyInjection as $directory) {
        if($directory != '.' && $directory != '..' && is_dir($baseDirectoryDependency.$directory)) {
            $filesDenpendencyInjection = scandir($baseDirectoryDependency.$directory);
            foreach($filesDenpendencyInjection as $file) {
                if($file != '.' && $file != '..') {
                    $classDependency = 'App\Dependency\\'.$directory.'\\'.str_replace('.php', '', $file) ;
                    $dependencies[] = new $classDependency;
                }
            }
        }
    }

    foreach($dependencies as $dependency) {
        $aliases = $dependency->getAliases();

        foreach($aliases as $alias => $final) {
            $services->alias($alias, $final);
        }
    }

};