#8082: test with buildx

.github/workflows/build-docker-artifact.yaml

@@ -20,28 +20,22 @@ jobs:
         id: prep
         run: echo "::set-output name=tag::$(echo ${GITHUB_REF#refs/heads/} | tr / -)"
       - uses: tenstorrent-metal/metal-workflows/.github/actions/checkout-with-submodule-lfs@v2.0.0
-
-
       - name: Login to GitHub Container Registry
         uses: docker/login-action@v3
         with:
           registry: https://ghcr.io
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
-      - name: Extract metadata (tags, labels) for Docker
-        id: meta
-        uses: docker/metadata-action@v5
-        with:
-          images: ghcr.io/${{ github.repository }}/${{ env.TT_METAL_DOCKER_IMAGE }}:latest
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
       - name: Build and push Docker image
         id: push
         uses: docker/build-push-action@v5
         with:
           context: .
           file: ./dockerfile/ubuntu-20.04-amd64.Dockerfile
           push: true
-          tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}
+          tags: ghcr.io/${{ github.repository }}/${{ env.TT_METAL_DOCKER_IMAGE }}:latest
 
       # - name: Push Docker image to GitHub Container Registry
       #   run: |