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/ramsey/collection/src/ArrayInterface.php

@@ -0,0 +1,49 @@
+<?php
+
+/**
+ * This file is part of the ramsey/collection library
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
+ * @copyright Copyright (c) Ben Ramsey <ben@benramsey.com>
+ * @license http://opensource.org/licenses/MIT MIT
+ */
+
+declare(strict_types=1);
+
+namespace Ramsey\Collection;
+
+use ArrayAccess;
+use Countable;
+use IteratorAggregate;
+
+/**
+ * `ArrayInterface` provides traversable array functionality to data types.
+ *
+ * @template T
+ * @extends ArrayAccess<array-key, T>
+ * @extends IteratorAggregate<array-key, T>
+ */
+interface ArrayInterface extends
+    ArrayAccess,
+    Countable,
+    IteratorAggregate
+{
+    /**
+     * Removes all items from this array.
+     */
+    public function clear(): void;
+
+    /**
+     * Returns a native PHP array representation of this array object.
+     *
+     * @return array<array-key, T>
+     */
+    public function toArray(): array;
+
+    /**
+     * Returns `true` if this array is empty.
+     */
+    public function isEmpty(): bool;
+}