Update workflow

.github/workflows/build.yml

@@ -108,13 +108,10 @@ jobs:
           echo ::set-output name=vcs_ref::${GITHUB_SHA::8}
       -
         name: Set up QEMU
-        uses: docker/setup-qemu-action@master
-        with:
-          platforms: all
+        uses: docker/setup-qemu-action@v1
       -
         name: Set up Docker Buildx
-        id: buildx
-        uses: docker/setup-buildx-action@master
+        uses: docker/setup-buildx-action@v1
       -
         name: Login to DockerHub
         if: github.event_name != 'pull_request'
@@ -126,7 +123,6 @@ jobs:
         name: Build
         uses: docker/build-push-action@v2
         with:
-          builder: ${{ steps.buildx.outputs.name }}
           context: .
           file: ./Dockerfile
           platforms: linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64,linux/386,linux/ppc64le,linux/s390x