Use buildx instead of build for docker Images

[la7eralus]

We get a warning in our azdo pipeline (Docker@2):

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/

Are there plans, to support the "new" buildx command?
Code:

azure-pipelines-tasks-common-packages/common-npm-packages/docker-common/dockercommandutils.ts

Line 20 in 470ed3d

command.arg("build");

Reference: https://docs.docker.com/engine/deprecated/#deprecated-engine-features-1 (Legacy Builder for Linux Images)

[davidreher]

Here is some more info on the deprecation itself.

[msherms2]

Anything on this? Looks like buildx is used for attestations which may help docker scout results. Any plans for this?