Updates to 3rd party libraries

Add Dockerfile and specific docker-php.ini

inc/vendor/phpoffice/phpspreadsheet/tests/PhpSpreadsheetTests/Functional/CommentsTest.php

@@ -0,0 +1,44 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheetTests\Functional;
+
+use PhpOffice\PhpSpreadsheet\Spreadsheet;
+
+class CommentsTest extends AbstractFunctional
+{
+    public function providerFormats()
+    {
+        return [
+            ['Html'],
+            ['Xlsx'],
+            ['Ods'],
+        ];
+    }
+
+    /**
+     * Test load file with comment in sheet to load proper
+     * count of comments in correct coords.
+     *
+     * @dataProvider providerFormats
+     *
+     * @param $format
+     */
+    public function testComments($format)
+    {
+        $spreadsheet = new Spreadsheet();
+
+        $spreadsheet->getActiveSheet()->getCell('E10')->setValue('Comment');
+        $spreadsheet->getActiveSheet()
+            ->getComment('E10')
+            ->getText()
+            ->createText('Comment to test');
+
+        $reloadedSpreadsheet = $this->writeAndReload($spreadsheet, $format);
+
+        $commentsLoaded = $reloadedSpreadsheet->getSheet(0)->getComments();
+        self::assertCount(1, $commentsLoaded);
+
+        $commentCoordinate = key($commentsLoaded);
+        self::assertSame('E10', $commentCoordinate);
+    }
+}