Install Chrome into Pantheon Appserver using PHP and NodeJS

.puppeteerrc.cjs

const { join } = require("path");

/**
 * @type {import("puppeteer").Configuration}
 */
module.exports = {
  // Changes the cache location for Puppeteer.
  cacheDirectory: join(__dirname, ".cache", "puppeteer"),
};

composer.json

{
  "name": "pantheon-chrome/pantheon-chrome",
  "description": "Load Chrome / Puppeteer into Pantheon",
  "require": {
    "pantheon-se/node-composer": "^2.1",
    "spatie/lighthouse-php": "^1.0"
  },
  "config": {
    "allow-plugins": {
      "pantheon-se/node-composer": true
    }
  },
  "scripts": {
    "post-install-cmd": [
      "@npm"
    ],
    "post-update-cmd": [
      "@npm"
    ],
    "npm": "npm install && node node_modules/puppeteer/install.js",
  }
}

lighthouse.php

<?php

require 'vendor/autoload.php';

use Spatie\Lighthouse\Lighthouse;
use Spatie\Lighthouse\Enums\Category;

// Used as php script
// php lighthouse.php https://example.com

// Get the URL parameter from the query string
if (!empty($argv[1])) {
    $url = $argv[1];

    // Chrome options
    $chrome_options = [
        'chromeFlags' => [
            '--headless',
            '--no-sandbox',
        ],
    ];

    // Find path to Chrome
    $baseDirectory = '/code/.cache/puppeteer/chrome/'; // Set the base directory path
    $directoryPattern = $baseDirectory . 'linux-*'; // Pattern to match subdirectories
    $subdirectory = glob($directoryPattern, GLOB_ONLYDIR);
    if (!empty($subdirectory[0])) {
        $chromeFilePath = $subdirectory[0] . '/chrome-linux64/chrome';
        // Check if the "chrome" file exists
        if (file_exists($chromeFilePath) && is_file($chromeFilePath)) {
            // Found the "chrome" file
            $chrome_options['chromePath'] = $chromeFilePath;

        } else {
            error_log("Chrome file not found.");
        }
    }

    // returns an instance of Spatie\Lighthouse\LighthouseResult
    $result = Lighthouse::url($url)
        ->withChromeOptions($chrome_options)
        ->run()
        ->saveHtml('/files/report.html');

    return json_encode($result->scores(), JSON_PRETTY_PRINT);
}

echo "No argument supplied";
exit(1);

package.json

{
  "name": "pantheon-chrome",
  "dependencies": {
    "chrome-launcher": "^0.15.2",
    "lighthouse": "^10.3.0",
    "puppeteer": "^20.7.3"
  }
}