<?php
if (!defined('ABSPATH')) exit;
require_once ABSPATH.'wp-admin/includes/media.php';
require_once ABSPATH.'wp-admin/includes/file.php';
require_once ABSPATH.'wp-admin/includes/image.php';
$post = (int) getenv('CVB_HERO_POST');
$url  = getenv('CVB_HERO_URL');
$alt  = 'Application d’un revêtement d’étanchéité blanc sur un toit-terrasse professionnel';
$aid = media_sideload_image($url, $post, $alt, 'id');
if (is_wp_error($aid)) { WP_CLI::error($aid->get_error_message()); }
update_post_meta($aid, '_wp_attachment_image_alt', $alt);
set_post_thumbnail($post, $aid);
WP_CLI::success("Featured image #$aid set on post #$post");