Use buildkit for container image builds

[pditommaso]

Wave uses Kaniko to build container images. However this can be some compatibility and security issues.

The goal of this task is to replace it with Buildkit which provides a better compatibility with existing Dockerfile commands.

[munishchouhan]

reading buildkit, will implement it once everything is figured out

[pditommaso]

I think @arnaualcazar already made some tests, and we are ready to go ahead

[arnaualcazar]

Happy to share what I tested with you, @munishchouhan, in case it helps

[munishchouhan]

@arnaualcazar yes, please share