core/bin/composer-script/CreateProjectScript.php

<?php

namespace Bolt\ComposerScripts;

use Composer\Script\Event;

class CreateProjectScript extends Script
{
    public static function execute(Event $event): void
    {
        parent::init('Running composer "post-create-project-cmd" scripts');

        self::copyEnv();
        self::deleteGitignore();
        self::createReadme();

        chdir(parent::getProjectFolder($event));

        self::run('php bin/console bolt:copy-themes --ansi');
        self::run('php bin/console bolt:welcome --ansi');
    }

    private static function copyEnv(): void
    {
        if (! file_exists('.env')) {
            copy('.env.dist', '.env');
        }
    }

    private static function deleteGitignore(): void
    {
        if (file_exists('public/.gitignore')) {
            unlink('public/.gitignore');
        }
    }

    private static function createReadme(): void
    {
        if (file_exists('README_project.md')) {
            rename('README_project.md', 'README.md');
        }
    }
}