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/MetadataAwareInterface.php

@@ -0,0 +1,48 @@
+<?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;
+
+/**
+ * This interface is used to get, set, and delete metadata about the translation messages.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+interface MetadataAwareInterface
+{
+    /**
+     * Gets metadata for the given domain and key.
+     *
+     * Passing an empty domain will return an array with all metadata indexed by
+     * domain and then by key. Passing an empty key will return an array with all
+     * metadata for the given domain.
+     *
+     * @return mixed The value that was set or an array with the domains/keys or null
+     */
+    public function getMetadata(string $key = '', string $domain = 'messages'): mixed;
+
+    /**
+     * Adds metadata to a message domain.
+     *
+     * @return void
+     */
+    public function setMetadata(string $key, mixed $value, string $domain = 'messages');
+
+    /**
+     * Deletes metadata for the given key and domain.
+     *
+     * Passing an empty domain will delete all metadata. Passing an empty key will
+     * delete all metadata for the given domain.
+     *
+     * @return void
+     */
+    public function deleteMetadata(string $key = '', string $domain = 'messages');
+}