Unlighthouse rework with docker 5

.forgejo/workflows/unlighthouse.yml

@@ -44,6 +44,8 @@ jobs:
     if: success()
     runs-on: dind
     steps:
+      - name: Checkout repository
+        uses: https://code.forgejo.org/actions/checkout@v3 
       - name: Downloading static site artifacts
         uses: actions/download-artifact@v3
         with: