Update to new setup-buildx and checkout. (#23)

.github/workflows/build.yml

@@ -11,18 +11,18 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: azure/docker-login@v1
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Log in to quay.io
+        uses: azure/docker-login@v1
         with:
           login-server: quay.io
           username: '${{ secrets.QUAYIO_USERNAME }}'
           password: '${{ secrets.QUAYIO_PASSWORD }}'
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
       - name: Set up Docker Buildx
-        id: buildx
-        uses: crazy-max/ghaction-docker-buildx@v1
-        with:
-          buildx-version: latest
-          qemu-version: latest
+        uses: docker/setup-buildx-action@v3
       - name: Available platforms
         run: 'echo ${{ steps.buildx.outputs.platforms }}'
       - name: Run Buildx