Creates auth.json from ENV vars

make-auth-json.php

<?php
/**
 * Example: Oauth with Github token
 * php make-auth-json.php github-oauth.github.com GITHUB_TOKEN
 *
 * Example: Basic auth for private satis repo
 * php make-auth-json.php http-basic.nova.laravel.com NOVA_USERNAME NOVA_PASSWORD
 */

// remove script name
array_shift($argv);

$configArgs = [];

// Replace script arguments with ENV vars
foreach ($argv as $key) {
    $configArgs[] = getenv($key) ?: $key;
}

// Pass modified arguments to 'composer config
shell_exec('composer config --auth ' . implode(' ', $configArgs));