Build modified streamline images

The official image from streamline does not currently work for the arm64
platform. As a temporary measure, the source code and docker build scripts
have been lifted from the official images and are used to build locally.

Some additional modifications are made to reduce overall image size, these
are documented in docker/README.md

docker/streamline-src/vendor/symfony/translation/Loader/JsonFileLoader.php

@@ -0,0 +1,51 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Translation\Loader;
+
+use Symfony\Component\Translation\Exception\InvalidResourceException;
+
+/**
+ * JsonFileLoader loads translations from an json file.
+ *
+ * @author singles
+ */
+class JsonFileLoader extends FileLoader
+{
+    protected function loadResource(string $resource): array
+    {
+        $messages = [];
+        if ($data = file_get_contents($resource)) {
+            $messages = json_decode($data, true);
+
+            if (0 < $errorCode = json_last_error()) {
+                throw new InvalidResourceException('Error parsing JSON: '.$this->getJSONErrorMessage($errorCode));
+            }
+        }
+
+        return $messages;
+    }
+
+    /**
+     * Translates JSON_ERROR_* constant into meaningful message.
+     */
+    private function getJSONErrorMessage(int $errorCode): string
+    {
+        return match ($errorCode) {
+            \JSON_ERROR_DEPTH => 'Maximum stack depth exceeded',
+            \JSON_ERROR_STATE_MISMATCH => 'Underflow or the modes mismatch',
+            \JSON_ERROR_CTRL_CHAR => 'Unexpected control character found',
+            \JSON_ERROR_SYNTAX => 'Syntax error, malformed JSON',
+            \JSON_ERROR_UTF8 => 'Malformed UTF-8 characters, possibly incorrectly encoded',
+            default => 'Unknown error',
+        };
+    }
+}