The legacy builder is deprecated […]. Install the buildx component to build images with BuildKit:

Hi! Thanks for your effort!
When running `./build.sh build`, I got this warning:

```text
DEPRECATED: The legacy builder is deprecated and will be removed in a future release.
            Install the buildx component to build images with BuildKit:
            https://docs.docker.com/go/buildx/
```

I hope that helps you prepare for that new version.