feat: Dockerfile enhancements

src/Languages/Dockerfile/DockerfileLanguage.php

@@ -6,11 +6,14 @@
 
 use Override;
 use Tempest\Highlight\Languages\Base\BaseLanguage;
+use Tempest\Highlight\Languages\Dockerfile\Patterns\CommentPattern;
+use Tempest\Highlight\Languages\Dockerfile\Patterns\DoubleQuoteValuePattern;
 use Tempest\Highlight\Languages\Dockerfile\Patterns\ImageAliasKeywordPattern;
 use Tempest\Highlight\Languages\Dockerfile\Patterns\ImageAliasNamePattern;
 use Tempest\Highlight\Languages\Dockerfile\Patterns\ImageNamePattern;
 use Tempest\Highlight\Languages\Dockerfile\Patterns\ImageTagPattern;
 use Tempest\Highlight\Languages\Dockerfile\Patterns\KeywordPattern;
+use Tempest\Highlight\Languages\Dockerfile\Patterns\SingleQuoteValuePattern;
 
 class DockerfileLanguage extends BaseLanguage
 {
@@ -54,6 +57,9 @@ public function getPatterns(): array
             new ImageAliasKeywordPattern(),
             new ImageAliasNamePattern(),
             new ImageTagPattern(),
+            new SingleQuoteValuePattern(),
+            new DoubleQuoteValuePattern(),
+            new CommentPattern(),
         ];
     }
 }

src/Languages/Dockerfile/Patterns/CommentPattern.php

@@ -0,0 +1,27 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tempest\Highlight\Languages\Dockerfile\Patterns;
+
+use Tempest\Highlight\IsPattern;
+use Tempest\Highlight\Pattern;
+use Tempest\Highlight\PatternTest;
+use Tempest\Highlight\Tokens\TokenType;
+use Tempest\Highlight\Tokens\TokenTypeEnum;
+
+#[PatternTest(input: '# Hello world!', output: '# Hello world!')]
+final class CommentPattern implements Pattern
+{
+    use IsPattern;
+
+    public function getPattern(): string
+    {
+        return '/(?<match>\#.*)/';
+    }
+
+    public function getTokenType(): TokenType
+    {
+        return TokenTypeEnum::COMMENT;
+    }
+}

src/Languages/Dockerfile/Patterns/DoubleQuoteValuePattern.php

@@ -0,0 +1,27 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tempest\Highlight\Languages\Dockerfile\Patterns;
+
+use Tempest\Highlight\IsPattern;
+use Tempest\Highlight\Pattern;
+use Tempest\Highlight\PatternTest;
+use Tempest\Highlight\Tokens\TokenTypeEnum;
+
+#[PatternTest(input: 'RUN ["php"]', output: '"php"')]
+#[PatternTest(input: 'RUN ["php", "test.php"]', output: ['"php"', '"test.php"'])]
+final readonly class DoubleQuoteValuePattern implements Pattern
+{
+    use IsPattern;
+
+    public function getPattern(): string
+    {
+        return '(?<match>"(\\\"|.)*?")';
+    }
+
+    public function getTokenType(): TokenTypeEnum
+    {
+        return TokenTypeEnum::VALUE;
+    }
+}

src/Languages/Dockerfile/Patterns/SingleQuoteValuePattern.php

@@ -0,0 +1,26 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tempest\Highlight\Languages\Dockerfile\Patterns;
+
+use Tempest\Highlight\IsPattern;
+use Tempest\Highlight\Pattern;
+use Tempest\Highlight\PatternTest;
+use Tempest\Highlight\Tokens\TokenTypeEnum;
+
+#[PatternTest(input: "RUN ['php']", output: "'php'")]
+final readonly class SingleQuoteValuePattern implements Pattern
+{
+    use IsPattern;
+
+    public function getPattern(): string
+    {
+        return "(?<match>'(\\\'|.)*?')";
+    }
+
+    public function getTokenType(): TokenTypeEnum
+    {
+        return TokenTypeEnum::VALUE;
+    }
+}

tests/Languages/Dockerfile/DockerfileLanguageTest.php

@@ -0,0 +1,35 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Languages\Dockerfile;
+
+use PHPUnit\Framework\Attributes\DataProvider;
+use PHPUnit\Framework\TestCase;
+use Tempest\Highlight\Highlighter;
+
+class DockerfileLanguageTest extends TestCase
+{
+    #[DataProvider('provide_highlight_cases')]
+    public function test_highlight(string $content, string $expected): void
+    {
+        $highlighter = new Highlighter();
+
+        $this->assertSame(
+            $expected,
+            $highlighter->parse($content, 'dockerfile'),
+        );
+    }
+
+    public static function provide_highlight_cases(): iterable
+    {
+        return [
+            ['FROM python:3.13', '<span class="hl-keyword">FROM</span> <span class="hl-value">python</span>:<span class="hl-value">3.13</span>'],
+            ['FROM php AS stage-one', '<span class="hl-keyword">FROM</span> <span class="hl-value">php</span> <span class="hl-keyword">AS</span> <span class="hl-value">stage-one</span>'],
+            ['WORKDIR /usr/local/app', '<span class="hl-keyword">WORKDIR</span> /usr/local/app'],
+            ['CMD ["node", "./src/index.js"]', '<span class="hl-keyword">CMD</span> [<span class="hl-value">&quot;node&quot;</span>, <span class="hl-value">&quot;./src/index.js&quot;</span>]'],
+            ["CMD ['php', 'index.php']", '<span class="hl-keyword">CMD</span> [<span class="hl-value">\'php\'</span>, <span class="hl-value">\'index.php\'</span>]'],
+            ['# This is a comment', '<span class="hl-comment"># This is a comment</span>'],
+        ];
+    }
+}

tests/targets/dockerfile.md

@@ -0,0 +1,18 @@
+```dockerfile
+FROM python:3.13
+WORKDIR /usr/local/app
+
+# Install the application dependencies
+COPY requirements.txt ./
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy in the source code
+COPY src ./src
+EXPOSE 8080
+
+# Setup an app user so the container doesn't run as the root user
+RUN useradd app
+USER app
+
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8080"]
+```