Copy .env.example to .env and generate an APP_KEY when not set on the Composer post-install-cmd hook

composer.json

{
	"scripts": {
		"post-install-cmd": [
			"@php -r \"file_exists('.env') || copy('.env.example', '.env');\"",
			"@php -r \"if (strlen(trim(file_get_contents('.env'))) > 0 && !preg_match('/^APP_KEY=.+/m', file_get_contents('.env'))) { echo shell_exec('php artisan key:generate --ansi'); }\"",
			"@php -r \"file_exists('database/database.sqlite') || touch('database/database.sqlite');\""
		]
	}
}