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/doctrine/dbal/src/Cache/CacheException.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace Doctrine\DBAL\Cache;
+
+use Doctrine\DBAL\Exception;
+
+/** @psalm-immutable */
+class CacheException extends Exception
+{
+    /** @return CacheException */
+    public static function noCacheKey()
+    {
+        return new self('No cache key was set.');
+    }
+
+    /** @return CacheException */
+    public static function noResultDriverConfigured()
+    {
+        return new self('Trying to cache a query but no result driver is configured.');
+    }
+}