[build] Replace the deprecated ghaction-docker-buildx

ghaction-docker-buildx has been merged with official docker action.

.github/workflows/musl-build-image.yml

@@ -12,18 +12,26 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - name: checkout code
+      -
+        name: checkout code
         uses: actions/checkout@v2
-      - name: install buildx
-        id: buildx
-        uses: crazy-max/ghaction-docker-buildx@v1
+      -
+        name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+      -
+        name: Login to Docker Hub
+        uses: docker/login-action@v2
         with:
-          version: latest
-      - name: login to docker hub
-        run: echo "${{ secrets.DOCKER_PASSWORD }}" | docker login -u "${{ secrets.DOCKER_USERNAME }}" --password-stdin
-      - name: build the image
-        run: |
-          cd .github/actions/muslbuilder && \
-            docker buildx build --push \
-              --tag tstack/lnav-build:latest \
-              --platform linux/amd64,linux/arm/v7,linux/arm64 .
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+      -
+        name: Build and push
+        uses: docker/build-push-action@v4
+        with:
+          context: ${{ github.workspace }}/.github/actions/muslbuilder/
+          platforms: linux/amd64, linux/arm/v7,linux/arm64
+          push: true
+          tags: tstack/lnav-build:latest