run behat test with panther in ddev

behat.yaml

default:
    formatters:
        pretty:
            verbose: true
            paths: false
            snippets: false

    extensions:
        DMore\ChromeExtension\Behat\ServiceContainer\ChromeExtension: ~
        Robertfausk\Behat\PantherExtension: ~

        FriendsOfBehat\MinkDebugExtension:
            directory: etc/build
            clean_start: false
            screenshot: true

        Behat\MinkExtension:
            files_path: "%paths.base%/vendor/sylius/sylius/src/Sylius/Behat/Resources/fixtures/"
            base_url: "https://example.project.test/"
            default_session: symfony
            javascript_session: panther_chrome
            sessions:
                symfony:
                    symfony: ~
                panther_chrome:
                    panther:
                        options:
                            env:
                                APP_ENV: 'test'
                            hostname: '127.0.0.1'
                            browser: 'chrome'
                            webServerDir: '%paths.base%/public' # your custom public dir
                        manager_options:
                            chromedriver_arguments:
                                - --log-path=/var/www/html/chromedriver.log
                                - --verbose
                                - --no-sandbox
                                - --headless
                                - --disable-dev-shm-usage
                                - --disable-gpu
                                - --window-size=1920,1080
                                - --ignore-certificate-errors

composer

ddev composer require --dev symfony/panther robertfausk/behat-panther-extension

config.yaml

# .ddev/config.yaml

hooks:
    post-start:
        - exec: "mkdir -p $HOME/.pki/nssdb"
        - exec: "certutil -d sql:$HOME/.pki/nssdb -N --empty-password"
        - exec: "certutil -d sql:$HOME/.pki/nssdb -A -t 'C,,' -n 'DDEV CA' -i /mnt/ddev-global-cache/mkcert/rootCA.pem"

Dockerfile

#.ddev/web-build/Dockerfile
ARG BASE_IMAGE
FROM $BASE_IMAGE

# Install Chromium, Driver, and NSS Tools (for certificates)
RUN apt-get update && apt-get install -y chromium chromium-driver libnss3-tools

ENV PANTHER_NO_SANDBOX=1
ENV PANTHER_CHROME_BINARY=/usr/bin/chromium
ENV PANTHER_CHROMEDRIVER_BINARY=/usr/bin/chromedriver

test-panther.php

<?php

declare(strict_types=1);

require __DIR__ . '/vendor/autoload.php';

use Symfony\Component\Panther\Client;

echo "Starting Panther Test...\n";

try {
    $client = Client::createChromeClient(
        null, // Use default chromedriver binary location
        [
            '--no-sandbox', // CRITICAL for Docker
            '--headless',
            '--disable-dev-shm-usage',
            '--disable-gpu'
        ],
        ['external_base_uri' => 'https://127.0.0.1']
    );

    echo "Requesting google.com...\n";
    $client->request('GET', 'https://www.google.com');

    echo "Page title is: " . $client->getTitle() . "\n";

    $client->takeScreenshot('panther-test.png');
    echo "Screenshot saved as panther-test.png\n";

} catch (\Exception $e) {
    echo "Error: " . $e->getMessage() . "\n";
}