Seperate out phpdoc to docker based action

.github/workflows/default.yml

@@ -102,10 +102,4 @@ jobs:
       if: matrix.php_version == '7.4'
       run: |
         wget https://scrutinizer-ci.com/ocular.phar
-        php ocular.phar code-coverage:upload --format=php-clover build/logs/clover.xml
-
-    - name: Documentation
-      if: matrix.php_version == '7.4' && github.ref_name == 'master' && github.event_name == 'push'
-      run: |
-        sudo apt-get update && sudo apt-get install -y graphviz
-        ./build-docs.sh
+        php ocular.phar code-coverage:upload --format=php-clover build/logs/clover.xml

.github/workflows/docs.yml

@@ -0,0 +1,50 @@
+name: Generate docs
+
+permissions:
+  contents: write
+  pages: write
+  id-token: write
+
+on:
+  push:
+    branches: ["main", "docs-github-pages"]
+  workflow_dispatch: 
+
+jobs:
+  docs:
+    name: Generate documentation
+    runs-on: ubuntu-latest
+
+    steps:
+
+    - uses: actions/checkout@v4
+      with:
+        submodules: true
+
+    - name: Run phpdoc
+      run: |
+        docker run --rm -v $(pwd):/data phpdoc/phpdoc:3 -t ./docs
+
+    - name: Setup Pages
+      uses: actions/configure-pages@v4
+
+    - name: Upload artifact
+      uses: actions/upload-pages-artifact@v3
+      with:
+        path: docs
+
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+
+    runs-on: ubuntu-latest
+    needs: docs
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v3
+
+      - uses: geekyeggo/delete-artifact@v2
+        with:
+          name: github-pages