Use buildjet with arm

.github/workflows/build.yaml

@@ -41,3 +41,38 @@ jobs:
           push: ${{ github.ref_type == 'tag' }}
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
+
+  docker-arm:
+    runs-on: buildjet-4vcpu-ubuntu-2204-arm
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v4
+        with:
+          images: ${{ secrets.DOCKER_IMAGE }}
+          flavor: latest=false
+          tags: |
+            type=raw,value=arm
+
+      - name: Login to image repository
+        if: github.ref_type == 'tag'
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKER_USER }}
+          password: ${{ secrets.DOCKER_TOKEN }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v4
+        with:
+          context: .
+          file: Dockerfile
+          platforms: 'linux/arm64'
+          push: ${{ github.ref_type == 'tag' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}