ci: revert multi-arch build

.github/workflows/ghcr-push.yml

@@ -20,24 +20,15 @@ jobs:
     steps:
     - uses: actions/checkout@v4
       name: Checkout
-    -
-      # Add support for more platforms with QEMU (optional)
-      # https://github.com/docker/setup-qemu-action
-      name: Set up QEMU
-      uses: docker/setup-qemu-action@v3
-    - name: Set up Docker Buildx
-      uses: docker/setup-buildx-action@v3
-    - name: Log in to GHCR
+
+    - name: Build
+      run: |
+        docker build -f clang-format-16.dockerfile -t ghcr.io/cwpearson/clang-format-16:latest .
+
+    - name: Publish to GHCR
       run: |
         echo '${{secrets.GHCR_TOKEN}}' | docker login ghcr.io -u cwpearson --password-stdin
-    - name: Build and Push
-      uses: docker/build-push-action@v2
-      with:
-        file: clang-format-16.dockerfile
-        push: true
-        platforms: linux/amd64,linux/arm64,linux/ppc64le
-        tags: |
-          ghcr.io/${{ github.repository_owner }}/clang-format-16:latest
+        docker push ghcr.io/cwpearson/clang-format-16:latest
   build-8:
     name: Build + Publish 8
     runs-on: ubuntu-latest