chore: add multi-platform support (linux/amd64, linux/arm64)

Author: synacktraa

.github/workflows/publish-docker.yml

@@ -43,11 +43,13 @@ jobs:
         with:
           context: .
           push: true
+          platforms: linux/amd64,linux/arm64
           tags: ${{ secrets.DOCKERHUB_USERNAME }}/qemu-local:${{ steps.version_tag.outputs.version }}
       -
         name: Build and push latest tag
         uses: docker/build-push-action@v6
         with:
           context: .
           push: true
+          platforms: linux/amd64,linux/arm64
           tags: ${{ secrets.DOCKERHUB_USERNAME }}/qemu-local:latest