Use Docker Compose to build docs and clean up project root

.gitattributes

@@ -4,7 +4,6 @@
 /.github/workflows/ export-ignore
 /.gitignore export-ignore
 /docs/ export-ignore
-/mkdocs.yml export-ignore
 /phpstan.neon.dist export-ignore
 /phpunit.xml.dist export-ignore
 /phpunit.xml.legacy export-ignore

.github/workflows/ci.yml

@@ -219,3 +219,11 @@ jobs:
       - run: php -S localhost:8080 tests/integration/public/index.php &
       - run: bash tests/await.bash
       - run: bash tests/integration.bash
+
+  Docs:
+    name: Docs
+    runs-on: ubuntu-24.04
+    steps:
+      - uses: actions/checkout@v4
+      - run: docker compose -f docs/compose.yaml run build
+      - run: ls -la build/docs/

docs/README.md

@@ -17,7 +17,7 @@ If you want to contribute to the documentation, it's easiest to just run
 this in a Docker container in the project root directory like this:
 
 ```bash
-$ docker run --rm -it -p 8000:8000 -v ${PWD}:/docs squidfunk/mkdocs-material:8.1.3
+docker compose -f docs/compose.yaml up
 ```
 
 You can access the documentation via `http://localhost:8000`.
@@ -29,14 +29,14 @@ If you want to generate a static HTML folder for deployment, you can again
 use a Docker container in the project root directory like this:
 
 ```bash
-$ docker run --rm -it -v ${PWD}:/docs squidfunk/mkdocs-material:8.1.3 build
+docker compose -f docs/compose.yaml run -u $(id -u) build
 ```
 
 The resulting `build/docs/` should then be deployed behind a web server.
 See also the [Framework X website repository](https://github.com/clue/framework-x-website)
 for more details about the website itself.
 
-If you want to add a new documentation file and/or change the page order, make sure the [`mkdocs.yml`](../mkdocs.yml)
-file in the project root directory contains an up-to-date list of all pages.
+If you want to add a new documentation file and/or change the page order, make sure the [`mkdocs.yml`](mkdocs.yml)
+file contains an up-to-date list of all pages.
 
 Happy hacking!

docs/compose.yaml

@@ -0,0 +1,18 @@
+services:
+  mkdocs:
+    image: squidfunk/mkdocs-material:8.1.3
+    command: serve -a 0.0.0.0:8000
+    ports:
+      - ${PORT:-8000}:8000
+    working_dir: /project/
+    volumes:
+      - ./mkdocs.yml:/project/mkdocs.yml:ro
+      - ./:/project/docs/:ro
+
+  build:
+    extends: mkdocs
+    command: build
+    volumes:
+      - ../build/:/project/build/:rw
+    profiles:
+      - build