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/Exception/BadRequestException.php

@@ -0,0 +1,19 @@
+<?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\Exception;
+
+/**
+ * Raised when a user sends a malformed request.
+ */
+class BadRequestException extends UnexpectedValueException implements RequestExceptionInterface
+{
+}

docker/streamline-src/vendor/symfony/http-foundation/Exception/ConflictingHeadersException.php

@@ -0,0 +1,21 @@
+<?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\Exception;
+
+/**
+ * The HTTP request contains headers with conflicting information.
+ *
+ * @author Magnus Nordlander <magnus@fervo.se>
+ */
+class ConflictingHeadersException extends UnexpectedValueException implements RequestExceptionInterface
+{
+}

docker/streamline-src/vendor/symfony/http-foundation/Exception/JsonException.php

@@ -0,0 +1,21 @@
+<?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\Exception;
+
+/**
+ * Thrown by Request::toArray() when the content cannot be JSON-decoded.
+ *
+ * @author Tobias Nyholm <tobias.nyholm@gmail.com>
+ */
+final class JsonException extends UnexpectedValueException implements RequestExceptionInterface
+{
+}

docker/streamline-src/vendor/symfony/http-foundation/Exception/RequestExceptionInterface.php

@@ -0,0 +1,21 @@
+<?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\Exception;
+
+/**
+ * Interface for Request exceptions.
+ *
+ * Exceptions implementing this interface should trigger an HTTP 400 response in the application code.
+ */
+interface RequestExceptionInterface
+{
+}

docker/streamline-src/vendor/symfony/http-foundation/Exception/SessionNotFoundException.php

@@ -0,0 +1,27 @@
+<?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\Exception;
+
+/**
+ * Raised when a session does not exist. This happens in the following cases:
+ * - the session is not enabled
+ * - attempt to read a session outside a request context (ie. cli script).
+ *
+ * @author Jérémy Derussé <jeremy@derusse.com>
+ */
+class SessionNotFoundException extends \LogicException implements RequestExceptionInterface
+{
+    public function __construct(string $message = 'There is currently no session available.', int $code = 0, ?\Throwable $previous = null)
+    {
+        parent::__construct($message, $code, $previous);
+    }
+}

docker/streamline-src/vendor/symfony/http-foundation/Exception/SuspiciousOperationException.php

@@ -0,0 +1,20 @@
+<?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\Exception;
+
+/**
+ * Raised when a user has performed an operation that should be considered
+ * suspicious from a security perspective.
+ */
+class SuspiciousOperationException extends UnexpectedValueException implements RequestExceptionInterface
+{
+}

docker/streamline-src/vendor/symfony/http-foundation/Exception/UnexpectedValueException.php

@@ -0,0 +1,16 @@
+<?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\Exception;
+
+class UnexpectedValueException extends \UnexpectedValueException
+{
+}