Include Lumen/Laravel app in custom WordPress template

I’ve built a small app with Lumen and now I want to include it on my wordpress site. However I have difficulty getting it to work. My approach was making a custom template and using it on a post with the URL I want. This is how it looks:

<?php /* Template Name: TestApp */ ?>

<?php
    /*
    |--------------------------------------------------------------------------
    | Create The Application
    |--------------------------------------------------------------------------
    |
    | First we need to get an application instance. This creates an instance
    | of the application / container and bootstraps the application so it
    | is ready to receive HTTP / Console requests from the environment.
    |
    */

    $app = require __DIR__.'/../../../../../my-app/bootstrap/app.php';

    /*
    |--------------------------------------------------------------------------
    | Run The Application
    |--------------------------------------------------------------------------
    |
    | Once we have the application, we can handle the incoming request
    | through the kernel, and send the associated response back to
    | the client's browser allowing them to enjoy the creative
    | and wonderful application we have prepared for them.
    |
    */

    $app->run();
?>

The $app path corresponds to a root level directory with the Lumen content inside. The idea was to use the /public/index.php as the template. It works so far, but when I query the site I get an NotFoundHttpException Error on the $app->run(); line, by RoutesRequests.php -> dispatch (line 108). I assume this is because the .htaccess isn’t there, however adding that doesn’t help.

How do I include standalone apps on a wordpress page?

Answers:

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Method 1

Okey so what I did was not using a WordPress theme template and instead deploying the app how I normally would without WP (e.g. create the folder /my-apps/my-app and put the index and htaccess file in there). After that I wrapped the index.php manually with require '../../wp-load.php'; in the template functions (get_header() etc.)

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