[concrete5] [V8] Example of adding a middleware from package

controller.php

<?php
namespace Concrete\Package\YourPackage;

use Acme\Http\Middleware\YourMiddleware;
use Concrete\Core\Http\ServerInterface;
use Concrete\Core\Package\Package;

class Controller extends Package
{
    public function on_start()
    {
        /** @var ServerInterface $server */
        $server = $this->app->make(ServerInterface::class);
        $server->addMiddleware($this->app->make(YourMiddleware::class));
    }
}