Remove difficulty category files for 4, 5, 7, and 8 star dishes, including all associated dish links.

.github/workflows/build.yml

@@ -29,24 +29,3 @@ jobs:
           commit_user_email: github-actions[bot]@users.noreply.github.com
           commit_author: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
 
-  build-docker-image:
-    needs: build-readme-file
-    runs-on: ubuntu-latest
-    steps:
-      # Checkout, install tools..
-      - uses: actions/checkout@v6
-        with:
-          lfs: true
-          fetch-depth: 0
-      # Use docker to build current directory ./Dockfile
-      - name: Login to GitHub Container Registry
-        uses: docker/login-action@v3
-        with:
-          registry: ghcr.io
-          username: ${{ github.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
-
-      - name: Build and push the Docker image
-        run: |
-          docker build . --tag ghcr.io/anduin2017/how-to-cook:latest
-          docker push ghcr.io/anduin2017/how-to-cook:latest