docs: Deprecate buildkit's build information

Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>

Author: vvoland

docs/deprecated.md

@@ -50,6 +50,7 @@ The table below provides an overview of the current status of deprecated feature
 
 | Status     | Feature                                                                                                                            | Deprecated | Remove  |
 |------------|------------------------------------------------------------------------------------------------------------------------------------|------------|---------|
+| Deprecated | [Buildkit build information](#buildkit-build-information)                                                                          | v23.0.0    | v23.1.0 |
 | Deprecated | [Legacy builder for Linux images](#legacy-builder-for-linux-images)                                                                | v23.0.0    | -       |
 | Deprecated | [Legacy builder fallback](#legacy-builder-fallback)                                                                                | v23.0.0    | -       |
 | Removed    | [Btrfs storage driver on CentOS 7 and RHEL 7](#btrfs-storage-driver-on-centos-7-and-rhel-7)                                        | v20.10     | v23.0.0 |
@@ -104,6 +105,14 @@ The table below provides an overview of the current status of deprecated feature
 | Removed    | [`--run` flag on `docker commit`](#--run-flag-on-docker-commit)                                                                    | v0.10      | v1.13   |
 | Removed    | [Three arguments form in `docker import`](#three-arguments-form-in-docker-import)                                                  | v0.6.7     | v1.12   |
 
+### Buildkit build information
+[Build information](https://github.com/moby/buildkit/blob/v0.11/docs/buildinfo.md)
+structures have been introduced in [BuildKit v0.10.0](https://github.com/moby/buildkit/releases/tag/v0.10.0)
+and are generated with build metadata that allows you to see all the sources
+(images, git repositories) that were used by the build with their exact
+versions and also the configuration that was passed to the build. This
+information is also embedded into the image configuration if one is generated.
+
 ### Legacy builder for Linux images
 
 **Deprecated in Release: v23.0.0**