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/mime/Resources/bin/update_mime_types.php

@@ -0,0 +1,168 @@
+<?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.
+ */
+
+if ('cli' !== \PHP_SAPI) {
+    throw new Exception('This script must be run from the command line.');
+}
+
+// load new map
+$data = json_decode(file_get_contents('https://cdn.jsdelivr.net/gh/jshttp/mime-db/db.json'), true);
+$new = [];
+foreach ($data as $mimeType => $mimeTypeInformation) {
+    if (!array_key_exists('extensions', $mimeTypeInformation)) {
+        continue;
+    }
+    $new[$mimeType] = $mimeTypeInformation['extensions'];
+}
+
+$xml = simplexml_load_string(file_get_contents('https://gitlab.freedesktop.org/xdg/shared-mime-info/-/raw/master/data/freedesktop.org.xml.in'));
+foreach ($xml as $node) {
+    $exts = [];
+    foreach ($node->glob as $glob) {
+        $pattern = (string) $glob['pattern'];
+        if ('*' != $pattern[0] || '.' != $pattern[1]) {
+            continue;
+        }
+
+        $exts[] = substr($pattern, 2);
+    }
+
+    if (!$exts) {
+        continue;
+    }
+
+    $mt = strtolower((string) $node['type']);
+    $new[$mt] = array_merge($new[$mt] ?? [], $exts);
+    foreach ($node->alias as $alias) {
+        $mt = strtolower((string) $alias['type']);
+        $new[$mt] = array_merge($new[$mt] ?? [], $exts);
+    }
+}
+
+// load current map
+$data = file_get_contents($output = __DIR__.'/../../MimeTypes.php');
+$current = [];
+$pre = '';
+$post = '';
+foreach (explode("\n", $data) as $line) {
+    if (!preg_match("{^        '([^']+/[^']+)' => \['(.+)'\],$}", $line, $matches)) {
+        if (!$current) {
+            $pre .= $line."\n";
+        } else {
+            $post .= $line."\n";
+        }
+        continue;
+    }
+    $current[$matches[1]] = explode("', '", $matches[2]);
+}
+
+$data = $pre;
+
+// reverse map
+// we prefill the extensions with some preferences for content-types
+$exts = [
+    'asice' => ['application/vnd.etsi.asic-e+zip'],
+    'bz2' => ['application/x-bz2'],
+    'csv' => ['text/csv'],
+    'ecma' => ['application/ecmascript'],
+    'flv' => ['video/x-flv'],
+    'gif' => ['image/gif'],
+    'gz' => ['application/x-gzip'],
+    'htm' => ['text/html'],
+    'html' => ['text/html'],
+    'jar' => ['application/x-java-archive'],
+    'jpg' => ['image/jpeg'],
+    'js' => ['text/javascript'],
+    'keynote' => ['application/vnd.apple.keynote'],
+    'key' => ['application/vnd.apple.keynote'],
+    'm3u' => ['audio/x-mpegurl'],
+    'm4a' => ['audio/mp4'],
+    'md' => ['text/markdown', 'text/x-markdown'],
+    'mdb' => ['application/x-msaccess'],
+    'mid' => ['audio/midi'],
+    'mov' => ['video/quicktime'],
+    'mp3' => ['audio/mpeg'],
+    'ogg' => ['audio/ogg'],
+    'pdf' => ['application/pdf'],
+    'php' => ['application/x-php'],
+    'png' => ['image/png'],
+    'ppt' => ['application/vnd.ms-powerpoint'],
+    'rar' => ['application/x-rar-compressed'],
+    'hqx' => ['application/stuffit'],
+    'sit' => ['application/x-stuffit', 'application/stuffit'],
+    'svg' => ['image/svg+xml'],
+    'tar' => ['application/x-tar'],
+    'tif' => ['image/tiff'],
+    'ttf' => ['application/x-font-truetype'],
+    'vcf' => ['text/x-vcard'],
+    'wav' => ['audio/wav'],
+    'wma' => ['audio/x-ms-wma'],
+    'wmv' => ['audio/x-ms-wmv'],
+    'xls' => ['application/vnd.ms-excel'],
+    'yaml' => ['application/yaml'],
+    'yml' => ['application/yaml'],
+    'zip' => ['application/zip'],
+];
+
+// we merge the 2 maps (we never remove old mime types)
+$map = array_replace_recursive($current, $new);
+
+foreach ($exts as $ext => $types) {
+    foreach ($types as $mt) {
+        if (!isset($map[$mt])) {
+            $map += [$mt => [$ext]];
+        }
+    }
+}
+ksort($map);
+
+foreach ($map as $mimeType => $extensions) {
+    foreach ($exts as $ext => $types) {
+        if (in_array($mimeType, $types, true)) {
+            array_unshift($extensions, $ext);
+        }
+    }
+    $data .= sprintf("        '%s' => ['%s'],\n", $mimeType, implode("', '", array_unique($extensions)));
+}
+$data .= $post;
+
+foreach ($map as $mimeType => $extensions) {
+    foreach ($extensions as $extension) {
+        if ('application/octet-stream' === $mimeType && 'bin' !== $extension) {
+            continue;
+        }
+
+        $exts[$extension][] = $mimeType;
+    }
+}
+ksort($exts);
+
+$updated = '';
+$state = 0;
+foreach (explode("\n", $data) as $line) {
+    if (!preg_match("{^        '([^'/]+)' => \['(.+)'\],$}", $line, $matches)) {
+        if (1 === $state) {
+            $state = 2;
+            foreach ($exts as $ext => $mimeTypes) {
+                $updated .= sprintf("        '%s' => ['%s'],\n", $ext, implode("', '", array_unique($mimeTypes)));
+            }
+        }
+        $updated .= $line."\n";
+        continue;
+    }
+    $state = 1;
+}
+
+$updated = preg_replace('{Updated from upstream on .+?\.}', sprintf('Updated from upstream on %s.', date('Y-m-d')), $updated, -1);
+
+file_put_contents($output, rtrim($updated, "\n")."\n");
+
+echo "Done.\n";