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/http-foundation/Session/Attribute/AttributeBagInterface.php

@@ -0,0 +1,58 @@
+<?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\HttpFoundation\Session\Attribute;
+
+use Symfony\Component\HttpFoundation\Session\SessionBagInterface;
+
+/**
+ * Attributes store.
+ *
+ * @author Drak <drak@zikula.org>
+ */
+interface AttributeBagInterface extends SessionBagInterface
+{
+    /**
+     * Checks if an attribute is defined.
+     */
+    public function has(string $name): bool;
+
+    /**
+     * Returns an attribute.
+     */
+    public function get(string $name, mixed $default = null): mixed;
+
+    /**
+     * Sets an attribute.
+     *
+     * @return void
+     */
+    public function set(string $name, mixed $value);
+
+    /**
+     * Returns attributes.
+     *
+     * @return array<string, mixed>
+     */
+    public function all(): array;
+
+    /**
+     * @return void
+     */
+    public function replace(array $attributes);
+
+    /**
+     * Removes an attribute.
+     *
+     * @return mixed The removed value or null when it does not exist
+     */
+    public function remove(string $name): mixed;
+}