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/process/Exception/ProcessTimedOutException.php

@@ -0,0 +1,73 @@
+<?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\Process\Exception;
+
+use Symfony\Component\Process\Process;
+
+/**
+ * Exception that is thrown when a process times out.
+ *
+ * @author Johannes M. Schmitt <schmittjoh@gmail.com>
+ */
+class ProcessTimedOutException extends RuntimeException
+{
+    public const TYPE_GENERAL = 1;
+    public const TYPE_IDLE = 2;
+
+    private Process $process;
+    private int $timeoutType;
+
+    public function __construct(Process $process, int $timeoutType)
+    {
+        $this->process = $process;
+        $this->timeoutType = $timeoutType;
+
+        parent::__construct(sprintf(
+            'The process "%s" exceeded the timeout of %s seconds.',
+            $process->getCommandLine(),
+            $this->getExceededTimeout()
+        ));
+    }
+
+    /**
+     * @return Process
+     */
+    public function getProcess()
+    {
+        return $this->process;
+    }
+
+    /**
+     * @return bool
+     */
+    public function isGeneralTimeout()
+    {
+        return self::TYPE_GENERAL === $this->timeoutType;
+    }
+
+    /**
+     * @return bool
+     */
+    public function isIdleTimeout()
+    {
+        return self::TYPE_IDLE === $this->timeoutType;
+    }
+
+    public function getExceededTimeout(): ?float
+    {
+        return match ($this->timeoutType) {
+            self::TYPE_GENERAL => $this->process->getTimeout(),
+            self::TYPE_IDLE => $this->process->getIdleTimeout(),
+            default => throw new \LogicException(sprintf('Unknown timeout type "%d".', $this->timeoutType)),
+        };
+    }
+}