Load services configuration

Author: Surfoo

configuration/micro_kernel_trait.rst

@@ -158,6 +158,7 @@ hold the kernel. Now it looks like this::
         protected function configureContainer(ContainerBuilder $c, LoaderInterface $loader)
         {
             $loader->load(__DIR__.'/../config/framework.yaml');
+            $loader->load(__DIR__.'/../config/services.yaml');
 
             // configure WebProfilerBundle only if the bundle is enabled
             if (isset($this->bundles['WebProfilerBundle'])) {
@@ -199,6 +200,61 @@ Before continuing, run this command to add support for the new dependencies:
 
     $ composer require symfony/yaml symfony/twig-bundle symfony/web-profiler-bundle doctrine/annotations
 
+You need add the following service configuration, which is the default config for a new project:
+
+.. configuration-block::
+
+    .. code-block:: yaml
+
+        # config/services.yaml
+        services:
+            # default configuration for services in *this* file
+            _defaults:
+                autowire: true      # Automatically injects dependencies in your services.
+                autoconfigure: true # Automatically registers your services as commands, event subscribers, etc.
+
+            # makes classes in src/ available to be used as services
+            # this creates a service per class whose id is the fully-qualified class name
+            App\:
+                resource: '../src/*'
+
+    .. code-block:: xml
+
+        <!-- config/services.xml -->
+        <?xml version="1.0" encoding="UTF-8" ?>
+        <container xmlns="http://symfony.com/schema/dic/services"
+                xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+                xsi:schemaLocation="http://symfony.com/schema/dic/services
+                    https://symfony.com/schema/dic/services/services-1.0.xsd">
+
+                <services>
+                    <!-- Default configuration for services in *this* file -->
+                    <defaults autowire="true" autoconfigure="true"/>
+
+                    <!-- makes classes in src/ available to be used as services -->
+                    <!-- this creates a service per class whose id is the fully-qualified class name -->
+                    <prototype namespace="App\" resource="../src/*"/>
+                </services>
+            </container>
+
+    .. code-block:: php
+
+        // config/services.php
+        namespace Symfony\Component\DependencyInjection\Loader\Configurator;
+
+        return function(ContainerConfigurator $configurator) {
+            // default configuration for services in *this* file
+            $services = $configurator->services()
+                ->defaults()
+                    ->autowire()      // Automatically injects dependencies in your services.
+                    ->autoconfigure() // Automatically registers your services as commands, event subscribers, etc.
+            ;
+
+            // makes classes in src/ available to be used as services
+            // this creates a service per class whose id is the fully-qualified class name
+            $services->load('App\\', '../src/*');
+        };
+
 Unlike the previous kernel, this loads an external ``config/framework.yaml`` file,
 because the configuration started to get bigger: