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/nunomaduro/termwind/src/HtmlRenderer.php

@@ -0,0 +1,116 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Termwind;
+
+use DOMDocument;
+use DOMNode;
+use Termwind\Html\CodeRenderer;
+use Termwind\Html\PreRenderer;
+use Termwind\Html\TableRenderer;
+use Termwind\ValueObjects\Node;
+
+/**
+ * @internal
+ */
+final class HtmlRenderer
+{
+    /**
+     * Renders the given html.
+     */
+    public function render(string $html, int $options): void
+    {
+        $this->parse($html)->render($options);
+    }
+
+    /**
+     * Parses the given html.
+     */
+    public function parse(string $html): Components\Element
+    {
+        $dom = new DOMDocument();
+
+        if (strip_tags($html) === $html) {
+            return Termwind::span($html);
+        }
+
+        $html = '<?xml encoding="UTF-8">'.trim($html);
+        $dom->loadHTML($html, LIBXML_NOERROR | LIBXML_COMPACT | LIBXML_HTML_NODEFDTD | LIBXML_NOBLANKS | LIBXML_NOXMLDECL);
+
+        /** @var DOMNode $body */
+        $body = $dom->getElementsByTagName('body')->item(0);
+        $el = $this->convert(new Node($body));
+
+        // @codeCoverageIgnoreStart
+        return is_string($el)
+            ? Termwind::span($el)
+            : $el;
+        // @codeCoverageIgnoreEnd
+    }
+
+    /**
+     * Convert a tree of DOM nodes to a tree of termwind elements.
+     */
+    private function convert(Node $node): Components\Element|string
+    {
+        $children = [];
+
+        if ($node->isName('table')) {
+            return (new TableRenderer)->toElement($node);
+        } elseif ($node->isName('code')) {
+            return (new CodeRenderer)->toElement($node);
+        } elseif ($node->isName('pre')) {
+            return (new PreRenderer)->toElement($node);
+        }
+
+        foreach ($node->getChildNodes() as $child) {
+            $children[] = $this->convert($child);
+        }
+
+        $children = array_filter($children, fn ($child) => $child !== '');
+
+        return $this->toElement($node, $children);
+    }
+
+    /**
+     * Convert a given DOM node to it's termwind element equivalent.
+     *
+     * @param  array<int, Components\Element|string>  $children
+     */
+    private function toElement(Node $node, array $children): Components\Element|string
+    {
+        if ($node->isText() || $node->isComment()) {
+            return (string) $node;
+        }
+
+        /** @var array<string, mixed> $properties */
+        $properties = [
+            'isFirstChild' => $node->isFirstChild(),
+        ];
+
+        $styles = $node->getClassAttribute();
+
+        return match ($node->getName()) {
+            'body' => $children[0], // Pick only the first element from the body node
+            'div' => Termwind::div($children, $styles, $properties),
+            'p' => Termwind::paragraph($children, $styles, $properties),
+            'ul' => Termwind::ul($children, $styles, $properties),
+            'ol' => Termwind::ol($children, $styles, $properties),
+            'li' => Termwind::li($children, $styles, $properties),
+            'dl' => Termwind::dl($children, $styles, $properties),
+            'dt' => Termwind::dt($children, $styles, $properties),
+            'dd' => Termwind::dd($children, $styles, $properties),
+            'span' => Termwind::span($children, $styles, $properties),
+            'br' => Termwind::breakLine($styles, $properties),
+            'strong' => Termwind::span($children, $styles, $properties)->strong(),
+            'b' => Termwind::span($children, $styles, $properties)->fontBold(),
+            'em', 'i' => Termwind::span($children, $styles, $properties)->italic(),
+            'u' => Termwind::span($children, $styles, $properties)->underline(),
+            's' => Termwind::span($children, $styles, $properties)->lineThrough(),
+            'a' => Termwind::anchor($children, $styles, $properties)->href($node->getAttribute('href')),
+            'hr' => Termwind::hr($styles, $properties),
+            default => Termwind::div($children, $styles, $properties),
+        };
+    }
+}