Import latest app updates from streamline

An updated set of source files and initialization was provided by streamline to
address issues observed during initial testing. These files have been updated in
order to generate a new set of app images.

docker/streamline-src/vendor/symfony/http-kernel/HttpCache/Ssi.php

@@ -1,86 +0,0 @@
-<?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\HttpKernel\HttpCache;
-
-use Symfony\Component\HttpFoundation\Request;
-use Symfony\Component\HttpFoundation\Response;
-
-/**
- * Ssi implements the SSI capabilities to Request and Response instances.
- *
- * @author Sebastian Krebs <krebs.seb@gmail.com>
- */
-class Ssi extends AbstractSurrogate
-{
-    public function getName(): string
-    {
-        return 'ssi';
-    }
-
-    /**
-     * @return void
-     */
-    public function addSurrogateControl(Response $response)
-    {
-        if (str_contains($response->getContent(), '<!--#include')) {
-            $response->headers->set('Surrogate-Control', 'content="SSI/1.0"');
-        }
-    }
-
-    public function renderIncludeTag(string $uri, ?string $alt = null, bool $ignoreErrors = true, string $comment = ''): string
-    {
-        return sprintf('<!--#include virtual="%s" -->', $uri);
-    }
-
-    public function process(Request $request, Response $response): Response
-    {
-        $type = $response->headers->get('Content-Type');
-        if (empty($type)) {
-            $type = 'text/html';
-        }
-
-        $parts = explode(';', $type);
-        if (!\in_array($parts[0], $this->contentTypes)) {
-            return $response;
-        }
-
-        // we don't use a proper XML parser here as we can have SSI tags in a plain text response
-        $content = $response->getContent();
-        $boundary = self::generateBodyEvalBoundary();
-        $chunks = preg_split('#<!--\#include\s+(.*?)\s*-->#', $content, -1, \PREG_SPLIT_DELIM_CAPTURE);
-
-        $i = 1;
-        while (isset($chunks[$i])) {
-            $options = [];
-            preg_match_all('/(virtual)="([^"]*?)"/', $chunks[$i], $matches, \PREG_SET_ORDER);
-            foreach ($matches as $set) {
-                $options[$set[1]] = $set[2];
-            }
-
-            if (!isset($options['virtual'])) {
-                throw new \RuntimeException('Unable to process an SSI tag without a "virtual" attribute.');
-            }
-
-            $chunks[$i] = $boundary.$options['virtual']."\n\n\n";
-            $i += 2;
-        }
-        $content = $boundary.implode('', $chunks).$boundary;
-
-        $response->setContent($content);
-        $response->headers->set('X-Body-Eval', 'SSI');
-
-        // remove SSI/1.0 from the Surrogate-Control header
-        $this->removeFromControl($response);
-
-        return $response;
-    }
-}