Update buildkit dependency to v0.14.0-rc1. Update the tracing
infrastructure to use the new detect API which updates how the delegated
exporter is configured.
Signed-off-by: Jonathan A. Sternberg <jonathan.sternberg@docker.com>
Print flag can be used to make additional information
requests about the build and print their results.
Currently Dockerfile supports: outline, targets, subrequests.describe
Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
