[DI] Allow injecting ENV parameters at runtime using %env(MY_ENV_VAR)% syntax

Author: nicolas-grekas

Kernel.php

@@ -16,7 +16,6 @@
 use Symfony\Component\DependencyInjection\ContainerInterface;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\Dumper\PhpDumper;
-use Symfony\Component\DependencyInjection\ParameterBag\ParameterBag;
 use Symfony\Component\DependencyInjection\Loader\XmlFileLoader;
 use Symfony\Component\DependencyInjection\Loader\YamlFileLoader;
 use Symfony\Component\DependencyInjection\Loader\IniFileLoader;
@@ -611,7 +610,8 @@ protected function prepareContainer(ContainerBuilder $container)
      */
     protected function getContainerBuilder()
     {
-        $container = new ContainerBuilder(new ParameterBag($this->getKernelParameters()));
+        $container = new ContainerBuilder();
+        $container->getParameterBag()->add($this->getKernelParameters());
 
         if (class_exists('ProxyManager\Configuration') && class_exists('Symfony\Bridge\ProxyManager\LazyProxy\Instantiator\RuntimeInstantiator')) {
             $container->setProxyInstantiator(new RuntimeInstantiator());