$ docker buildx create --name builder --use
$ docker buildx inspect builder --bootstrap
Can be replaced by
$ docker buildx create --name builder --use --bootstrap
Instead of crane to inspect the manifest, you can use buildx imagetools inspect with its new --format flag:
$ docker buildx imagetools inspect --format "{{json .}}" devopps/hello-world-multi-arch:v1
It will give you more info like manifest, image config, and buildinfo