composer/library/docker-traefik#4 Fix setting of default value

src/Handler.php

@@ -49,7 +49,7 @@ class Handler extends BaseHandler {
         'ports' => $this->env->receive('traefik_ports', '', '8443'),
         'cert' => $this->env->receive('traefik_cert', '', 'fullchain.pem'),
         'key' => $this->env->receive('traefik_key', '', 'privkey.pem'),
-        'portainer' => 0,
+        'portainer' => $this->env->receive('traefik_portainer', '', '0'),
       ],
       'live' => [
         'root' => '',