Optionally run build checks and fail on issues

### Description

Thanks for working on this action :)

The `docker buildx build` command exposes the useful [`check` frontend call](https://docs.docker.com/reference/cli/docker/buildx/build/#check) to check for [some best practices](https://docs.docker.com/reference/build-checks/).

Would it be possible to optionally run it before running the build, and fail if it returns any warning?