Completely untie the backend from the frontend.

Build nginx and mariadb together with the app image.
Upgrade docker-compose configuration to 3 version.
Add cleanup step to the gitlab-ci.

api/index.php

@@ -0,0 +1,36 @@
+<?php
+
+use api\aop\AspectKernel;
+use common\config\ConfigLoader;
+use yii\web\Application;
+
+$time = microtime(true);
+
+require __DIR__ . '/../vendor/autoload.php';
+
+defined('YII_DEBUG') || define('YII_DEBUG', in_array(getenv('YII_DEBUG'), ['true', '1'], false));
+defined('YII_ENV') || define('YII_ENV', getenv('YII_ENV'));
+
+// Initialize an application aspect container
+AspectKernel::getInstance()->init([
+    'debug' => YII_DEBUG,
+    'appDir' => dirname(__DIR__),
+    'cacheDir' => __DIR__ . '/runtime/aspect',
+    'excludePaths' => [
+        __DIR__ . '/runtime/aspect',
+        __DIR__ . '/../vendor',
+    ],
+]);
+
+require __DIR__ . '/../vendor/yiisoft/yii2/Yii.php';
+require __DIR__ . '/../common/config/bootstrap.php';
+require __DIR__ . '/config/bootstrap.php';
+
+$config = ConfigLoader::load('api');
+
+$application = new Application($config);
+$application->run();
+
+$timeDifference = (microtime(true) - $time) * 1000;
+fastcgi_finish_request();
+Yii::$app->statsd->time('request.time', $timeDifference);