diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index fae48d5..b696ac2 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -13,21 +13,55 @@ jobs:
             - name: Setup PHP
               uses: shivammathur/setup-php@v2
             - name: Validate composer.json
-              run: composer validate --strict --no-check-lock
-    cs-fixer:
+              run: |
+                (cd src/Bundle && composer validate --strict --no-check-lock)
+    tests:
         runs-on: ubuntu-20.04
-        name: PHP-CS-Fixer
+        strategy:
+            fail-fast: false
+            matrix:
+                include:
+                    - description: 'Symfony 6.3 DEV'
+                      php: '8.2'
+                      symfony: '6.3.*@dev'
+                    - description: 'Symfony 6.2'
+                      php: '8.2'
+                      symfony: '6.2.*'
+                    - description: 'Symfony 6.0'
+                      php: '8.1'
+                      symfony: '6.0.*'
+                    - description: 'Symfony 5.4'
+                      php: '7.3'
+                      symfony: '5.4.*'
+                    - description: 'Beta deps'
+                      php: '7.2'
+                      beta: true
+        name: PHP ${{ matrix.php }} tests (${{ matrix.description }})
         steps:
             - name: Checkout
               uses: actions/checkout@v3
+            - name: Cache
+              uses: actions/cache@v3
+              with:
+                  path: ~/.composer/cache/files
+                  key: composer-${{ matrix.php }}-${{ matrix.symfony }}-${{ matrix.composer_option }}
             - name: Setup PHP
               uses: shivammathur/setup-php@v2
               with:
-                  php-version: '7.3'
-            - run: composer install --prefer-dist --no-interaction --no-progress --ansi
-            - run: vendor/bin/php-cs-fixer fix --diff --dry-run --verbose
-    tests:
-        runs-on: ubuntu-20.04
+                  php-version: ${{ matrix.php }}
+            - run: |
+                  sed -ri 's/"symfony\/(.+)": "(.+)"/"symfony\/\1": "'${{ matrix.symfony }}'"/' src/Bundle/composer.json;
+              if: matrix.symfony
+            - run: |
+                  composer config minimum-stability dev
+                  composer config prefer-stable true
+              if: matrix.beta
+            - run: |
+                  (cd src/Bundle && composer update --prefer-dist --no-interaction --no-progress --ansi ${{ matrix.composer_option }})
+            - run: |
+                  (cd src/Bundle && vendor/bin/phpunit)
+    tests-windows:
+        runs-on: windows-2022
         strategy:
             fail-fast: false
             matrix:
@@ -41,19 +75,13 @@ jobs:
                     - description: 'Symfony 6.0'
                       php: '8.1'
                       symfony: '6.0.*'
-                    - description: 'Symfony 5.0'
+                    - description: 'Symfony 5.4'
                       php: '7.3'
-                      symfony: '5.0.*'
-                    - description: 'Symfony 4.4'
-                      php: '7.1'
-                      symfony: '4.3.*@dev'
-                    - description: 'Symfony 3.4'
-                      php: '7.3'
-                      symfony: '3.4.*'
+                      symfony: '5.4.*'
                     - description: 'Beta deps'
                       php: '7.2'
                       beta: true
-        name: PHP ${{ matrix.php }} tests (${{ matrix.description }})
+        name: "[WINDOWS] PHP ${{ matrix.php }} tests (${{ matrix.description }})"
         steps:
             - name: Checkout
               uses: actions/checkout@v3
@@ -67,16 +95,13 @@ jobs:
               with:
                   php-version: ${{ matrix.php }}
             - run: |
-                  sed -ri 's/"symfony\/(.+)": "(.+)"/"symfony\/\1": "'${{ matrix.symfony }}'"/' composer.json;
+                  (Get-Content composer.json) -replace '("symfony/[^"]+": )"[^"]+"', '$1"${{ matrix.symfony }}"' | Out-File -encoding ASCII src/Bundle/composer.json
               if: matrix.symfony
             - run: |
                   composer config minimum-stability dev
                   composer config prefer-stable true
               if: matrix.beta
-            - name: remove cs-fixer for Symfony 6
-              if: contains(matrix.symfony, '6.3.*@dev')
-              run: |
-                  composer remove --dev friendsofphp/php-cs-fixer pedrotroller/php-cs-custom-fixer --no-update
-            - run: composer update --prefer-dist --no-interaction --no-progress --ansi ${{ matrix.composer_option }}
-            - run: vendor/bin/phpunit
-            - run: vendor/bin/phpstan analyse --ansi --no-progress
+            - run: |
+                  {cd src/Bundle && composer update --prefer-dist --no-interaction --no-progress --ansi ${{ matrix.composer_option }}}
+            - run: |
+                  {cd src/Bundle && vendor/bin/phpunit}
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..3be777a
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,14 @@
+FROM composer:2.6.3 as composer
+
+###############################
+
+FROM php:8.2.10-fpm-alpine3.18
+
+WORKDIR /src
+
+COPY --from=composer /usr/bin/composer /usr/bin/composer
+
+COPY ./entrypoint /usr/local/share/entrypoint
+COPY ./src /src
+
+ENTRYPOINT ["/usr/local/share/entrypoint"]
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..43e1b76
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,9 @@
+IMAGE_TAG:=knplabs/snappy:test
+
+.PHONY: build
+build:
+	docker build ./ -t "${IMAGE_TAG}"
+
+.PHONY: test
+test: build
+	$(MAKE) -C src/Bundle test IMAGE_TAG="${IMAGE_TAG}" ARGS="${ARGS}"
diff --git a/entrypoint b/entrypoint
new file mode 100755
index 0000000..4713216
--- /dev/null
+++ b/entrypoint
@@ -0,0 +1,8 @@
+#!/bin/sh
+
+set -o pipefail
+set -o errexit
+
+(cd /src/Bundle && composer install)
+
+exec "${@}"
diff --git a/src/Bundle/.gitattributes b/src/Bundle/.gitattributes
index ea3019f..01a37ec 100644
--- a/src/Bundle/.gitattributes
+++ b/src/Bundle/.gitattributes
@@ -1,3 +1,4 @@
-/spec/            export-ignore
+/Tests/           export-ignore
 /.gitattributes   export-ignore
 /.gitignore       export-ignore
+/phpunit.xml.dist export-ignore
diff --git a/src/Bundle/.gitignore b/src/Bundle/.gitignore
index ff72e2d..5e0f179 100644
--- a/src/Bundle/.gitignore
+++ b/src/Bundle/.gitignore
@@ -1,2 +1,3 @@
 /composer.lock
 /vendor
+.phpunit.result.cache
diff --git a/src/Bundle/DependencyInjection/Configuration.php b/src/Bundle/DependencyInjection/Configuration.php
new file mode 100644
index 0000000..ae9d19e
--- /dev/null
+++ b/src/Bundle/DependencyInjection/Configuration.php
@@ -0,0 +1,49 @@
+<?php
+
+declare(strict_types=1);
+
+namespace KnpLabs\Snappy\Bundle\DependencyInjection;
+
+use Symfony\Component\Config\Definition\Builder\TreeBuilder;
+use Symfony\Component\Config\Definition\ConfigurationInterface;
+
+class Configuration implements ConfigurationInterface
+{
+    public function getConfigTreeBuilder()
+    {
+      $treeBuilder = new TreeBuilder('snappy');
+
+      $treeBuilder->getRootNode()
+        ->children()
+          ->arrayNode('backends')
+            ->useAttributeAsKey('name')
+            ->arrayPrototype()
+              ->children()
+                  ->scalarNode('driver')
+                    ->isRequired()
+                    ->validate()
+                        ->ifNotInArray(['wkhtmltopdf', 'chromium'])
+                        ->thenInvalid('Invalid backend driver %s')
+                    ->end()
+                  ->end()
+                  ->integerNode('timeout')
+                    ->min(1)
+                    ->defaultValue(30)
+                  ->end()
+                  ->scalarNode('binary_path')
+                    ->isRequired()
+                    ->cannotBeEmpty()
+                  ->end()
+                  ->arrayNode('options')
+                    ->useAttributeAsKey('name')
+                    ->scalarPrototype()->end()
+                  ->end()
+              ->end()
+            ->end()
+          ->end()
+        ->end()
+      ;
+
+      return $treeBuilder;
+    }
+}
diff --git a/src/Bundle/DependencyInjection/SnappyExtension.php b/src/Bundle/DependencyInjection/SnappyExtension.php
new file mode 100644
index 0000000..52d5f46
--- /dev/null
+++ b/src/Bundle/DependencyInjection/SnappyExtension.php
@@ -0,0 +1,18 @@
+<?php
+
+declare(strict_types=1);
+
+namespace KnpLabs\Snappy\Bundle\DependencyInjection;
+
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\Extension\Extension;
+
+class SnappyExtension extends Extension
+{
+  public function load(array $config, ContainerBuilder $container): void
+  {
+    foreach($config['backends'] as $backend) {
+      // @TODO: load backend services
+    }
+  }
+}
diff --git a/src/Bundle/Makefile b/src/Bundle/Makefile
new file mode 100644
index 0000000..0cf201a
--- /dev/null
+++ b/src/Bundle/Makefile
@@ -0,0 +1,3 @@
+.PHONY: test
+test:
+	docker run --rm -i -w /src/Bundle -v "$(shell pwd)/../:/src" "${IMAGE_TAG}" vendor/bin/phpunit $(ARGS) -v
diff --git a/src/Bundle/SnappyBundle.php b/src/Bundle/SnappyBundle.php
index de3bd6a..5e3441a 100644
--- a/src/Bundle/SnappyBundle.php
+++ b/src/Bundle/SnappyBundle.php
@@ -1,10 +1,12 @@
 <?php
 
+declare(strict_types=1);
+
 namespace KnpLabs\Snappy\Bundle;
 
-use Symfony\Component\HttpKernel\Bundle\AbstractBundle;
+use Symfony\Component\HttpKernel\Bundle\Bundle;
 
-class SnappyBundle extends AbstractBundle
+class SnappyBundle extends Bundle
 {
 
 }
diff --git a/src/Bundle/Tests/DependencyInjection/ConfigurationTest.php b/src/Bundle/Tests/DependencyInjection/ConfigurationTest.php
new file mode 100644
index 0000000..1b95ad5
--- /dev/null
+++ b/src/Bundle/Tests/DependencyInjection/ConfigurationTest.php
@@ -0,0 +1,264 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\Unit\__Application__\Http\Cache\SharedCacheConfiguration;
+
+use KnpLabs\Snappy\Bundle\DependencyInjection\Configuration;
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Config\Definition\Exception\InvalidConfigurationException;
+use Symfony\Component\Config\Definition\Processor;
+
+final class ConfigurationTest extends TestCase
+{
+  public function testItProcessesAMinimalWkhtmltopdfConfiguration(): void
+  {
+    $config = (new Processor())->processConfiguration(
+      new Configuration(),
+      [[
+        'backends' => [
+          'my_minimally_configured_wkhtmltopdf_backend' => [
+            'driver' => 'wkhtmltopdf',
+            'binary_path' => '/usr/bin/wkhtmltopdf',
+          ],
+        ],
+      ]]
+    );
+
+    $expected = [
+      'backends' => [
+        'my_minimally_configured_wkhtmltopdf_backend' => [
+          'driver' => 'wkhtmltopdf',
+          'timeout' => 30,
+          'binary_path' => '/usr/bin/wkhtmltopdf',
+          'options' => [],
+        ],
+      ],
+    ];
+
+    $this->assertEquals($config, $expected);
+  }
+
+  public function testItProcessesAFullWkhtmltopdfConfiguration(): void
+  {
+    $config = (new Processor())->processConfiguration(
+      new Configuration(),
+      [[
+        'backends' => [
+          'my_fully_configured_wkhtmltopdf_backend' => [
+            'driver' => 'wkhtmltopdf',
+            'timeout' => 60,
+            'binary_path' => '/usr/bin/wkhtmltopdf',
+            'options' => [
+                'key1' => 'val',
+                'key2' => null,
+                'key3',
+            ],
+          ],
+        ],
+      ]]
+    );
+
+    $expected = [
+      'backends' => [
+        'my_fully_configured_wkhtmltopdf_backend' => [
+          'driver' => 'wkhtmltopdf',
+          'timeout' => 60,
+          'binary_path' => '/usr/bin/wkhtmltopdf',
+          'options' => [
+              'key1' => 'val',
+              'key2' => null,
+              'key3',
+          ],
+        ],
+      ],
+    ];
+
+    $this->assertEquals($config, $expected);
+  }
+
+  public function testItProcessesAMinimalChromiumConfiguration(): void
+  {
+    $config = (new Processor())->processConfiguration(
+      new Configuration(),
+      [[
+        'backends' => [
+          'my_minimally_configured_chromium_backend' => [
+            'driver' => 'chromium',
+            'binary_path' => '/usr/bin/chromium',
+          ],
+        ],
+      ]]
+    );
+
+    $expected = [
+      'backends' => [
+        'my_minimally_configured_chromium_backend' => [
+          'driver' => 'chromium',
+          'timeout' => 30,
+          'binary_path' => '/usr/bin/chromium',
+          'options' => [],
+        ],
+      ],
+    ];
+
+    $this->assertEquals($config, $expected);
+  }
+
+  public function testItProcessesAFullChromiumConfiguration(): void
+  {
+    $config = (new Processor())->processConfiguration(
+      new Configuration(),
+      [[
+        'backends' => [
+          'my_fully_configured_chromium_backend' => [
+            'driver' => 'chromium',
+            'timeout' => 60,
+            'binary_path' => '/usr/bin/chromium',
+            'options' => [
+                'key1' => 'val',
+                'key2' => null,
+                'key3',
+            ],
+          ],
+        ],
+      ]]
+    );
+
+    $expected = [
+      'backends' => [
+        'my_fully_configured_chromium_backend' => [
+          'driver' => 'chromium',
+          'timeout' => 60,
+          'binary_path' => '/usr/bin/chromium',
+          'options' => [
+              'key1' => 'val',
+              'key2' => null,
+              'key3',
+          ],
+        ],
+      ],
+    ];
+
+    $this->assertEquals($config, $expected);
+  }
+
+  public function testItProcessesAMultiBackendConfiguration(): void
+  {
+    $config = (new Processor())->processConfiguration(
+      new Configuration(),
+      [[
+        'backends' => [
+          'my_minimally_configured_wkhtmltopdf_backend' => [
+            'driver' => 'wkhtmltopdf',
+            'binary_path' => '/usr/bin/wkhtmltopdf',
+          ],
+          'my_fully_configured_wkhtmltopdf_backend' => [
+            'driver' => 'wkhtmltopdf',
+            'timeout' => 60,
+            'binary_path' => '/usr/bin/wkhtmltopdf',
+            'options' => [
+              'key1' => 'val',
+              'key2' => null,
+              'key3',
+            ],
+          ],
+          'my_fully_configured_chromium_backend' => [
+            'driver' => 'chromium',
+            'timeout' => 60,
+            'binary_path' => '/usr/bin/chromium',
+            'options' => [
+              'key1' => 'val',
+              'key2' => null,
+              'key3',
+            ],
+          ],
+        ],
+      ]]
+    );
+
+    $expected = [
+      'backends' => [
+        'my_minimally_configured_wkhtmltopdf_backend' => [
+          'driver' => 'wkhtmltopdf',
+          'timeout' => 30,
+          'binary_path' => '/usr/bin/wkhtmltopdf',
+          'options' => [],
+        ],
+        'my_fully_configured_wkhtmltopdf_backend' => [
+          'driver' => 'wkhtmltopdf',
+          'timeout' => 60,
+          'binary_path' => '/usr/bin/wkhtmltopdf',
+          'options' => [
+            'key1' => 'val',
+            'key2' => null,
+            'key3',
+          ],
+        ],
+        'my_fully_configured_chromium_backend' => [
+          'driver' => 'chromium',
+          'timeout' => 60,
+          'binary_path' => '/usr/bin/chromium',
+          'options' => [
+            'key1' => 'val',
+            'key2' => null,
+            'key3',
+          ],
+        ],
+      ],
+    ];
+
+    $this->assertEquals($config, $expected);
+  }
+
+  public function testItThrowsWhenProcessingAnInvalidDriverConfiguration(): void
+  {
+    $this->expectException(InvalidConfigurationException::class);
+
+    (new Processor())->processConfiguration(
+      new Configuration(),
+      [[
+        'backends' => [
+          'invalid_backend' => [
+            'driver' => 'non-existing-driver',
+            'binary_path' => '/usr/bin/non-existing-binary',
+          ],
+        ],
+      ]]
+    );
+  }
+
+  public function testItThrowsWhenProcessingAnInvalidBinaryPathConfiguration(): void
+  {
+    $this->expectException(InvalidConfigurationException::class);
+
+    (new Processor())->processConfiguration(
+      new Configuration(),
+      [[
+        'backends' => [
+          'invalid_backend' => [
+            'driver' => 'wkhtmltopdf',
+          ],
+        ],
+      ]]
+    );
+  }
+
+  public function testItThrowsWhenProcessingAnInvalidTimeoutConfiguration(): void
+  {
+    $this->expectException(InvalidConfigurationException::class);
+
+    (new Processor())->processConfiguration(
+      new Configuration(),
+      [[
+        'backends' => [
+          'invalid_backend' => [
+            'driver' => 'wkhtmltopdf',
+            'timeout' => 0,
+            'binary_path' => '/usr/bin/wkhtmltopdf',
+          ],
+        ],
+      ]]
+    );
+  }
+}
diff --git a/src/Bundle/composer.json b/src/Bundle/composer.json
index 421b3f9..c6afaa3 100644
--- a/src/Bundle/composer.json
+++ b/src/Bundle/composer.json
@@ -16,18 +16,23 @@
         }
     ],
     "require": {
-        "php": ">=8.0",
-        "symfony/http-kernel": "^5.4|^6.2"
+        "php": ">=7.2.5",
+        "symfony/config": "^5.4|^6.0",
+        "symfony/dependency-injection": "^5.4|^6.0",
+        "symfony/http-kernel": "^5.4|^6.0"
     },
     "autoload": {
         "psr-4": { "KnpLabs\\Snappy\\Bundle\\": "" },
         "exclude-from-classmap": [
-            "/spec/"
+            "/Tests/"
         ]
     },
     "autoload-dev": {
         "psr-4": {
-            "KnpLabs\\Snappy\\Bundle\\Spec\\": "spec/"
+            "Tests\\KnpLabs\\Snappy\\Bundle\\": "Tests/"
         }
+    },
+    "require-dev": {
+        "phpunit/phpunit": "<7.5|^9.6"
     }
 }
diff --git a/src/Bundle/phpunit.xml.dist b/src/Bundle/phpunit.xml.dist
new file mode 100644
index 0000000..7be3ea8
--- /dev/null
+++ b/src/Bundle/phpunit.xml.dist
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:noNamespaceSchemaLocation="http://schema.phpunit.de/9.3/phpunit.xsd"
+  backupGlobals="false"
+  colors="true"
+  bootstrap="vendor/autoload.php"
+  failOnRisky="true"
+  failOnWarning="true"
+>
+  <php>
+    <ini name="error_reporting" value="-1" />
+  </php>
+
+  <testsuites>
+    <testsuite name="KNPLabs Snappy Bundle Test Suite">
+      <directory>./Tests/</directory>
+    </testsuite>
+  </testsuites>
+
+  <coverage>
+    <include>
+      <directory>./</directory>
+    </include>
+    <exclude>
+      <directory>./tests</directory>
+      <directory>./vendor</directory>
+    </exclude>
+  </coverage>
+</phpunit>