Generate multi arch Docker images,fix #86

Signed-off-by: Julien Nioche <[email protected]>

.github/workflows/dockerhub.yml

@@ -25,12 +25,22 @@ jobs:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
-      - name: Build and push
-        id: docker_build
-        uses: docker/build-push-action@v2
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@2b82ce82d56a2a04d2637cd93a637ae1b359c0a7
         with:
-          context: .
+          platforms: all
+
+      - name: Setup Docker buildx
+        id: buildx
+        uses: docker/setup-buildx-action@4c0219f9ac95b02789c1075625400b2acbff50b1
+
+      - name: Build, tag, and push image to DockerHub
+        uses: docker/build-push-action@ac9327eae2b366085ac7f6a2d02df8aa8ead720a
+        with:
+          builder: ${{ steps.buildx.outputs.name }}
+          platforms: linux/amd64,linux/arm64
           push: true
-          platforms: linux/amd64
+          context: .
+          file: ./Dockerfile
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}