Update build_CPU.yml

.github/workflows/build_CPU.yml

@@ -17,6 +17,12 @@ jobs:
   docker:
     runs-on: ubuntu-latest
     steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
       -
         name: Login to Docker Hub
         uses: docker/login-action@v3.0.0