Updates to 3rd party libraries

Add Dockerfile and specific docker-php.ini

inc/vendor/phpoffice/phpspreadsheet/tests/PhpSpreadsheetTests/Chart/LayoutTest.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheetTests\Chart;
+
+use PhpOffice\PhpSpreadsheet\Chart\Layout;
+use PHPUnit\Framework\TestCase;
+
+class LayoutTest extends TestCase
+{
+    public function testSetLayoutTarget()
+    {
+        $LayoutTargetValue = 'String';
+
+        $testInstance = new Layout();
+
+        $result = $testInstance->setLayoutTarget($LayoutTargetValue);
+        self::assertInstanceOf(Layout::class, $result);
+    }
+
+    public function testGetLayoutTarget()
+    {
+        $LayoutTargetValue = 'String';
+
+        $testInstance = new Layout();
+        $testInstance->setLayoutTarget($LayoutTargetValue);
+
+        $result = $testInstance->getLayoutTarget();
+        self::assertEquals($LayoutTargetValue, $result);
+    }
+}