docs: update bake notes

Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>

README.md

@@ -14,7 +14,7 @@ Key features:
 - Multiple builder instance support
 - Multi-node builds for cross-platform images
 - Compose build support
-- WIP: High-level build constructs (`bake`)
+- High-level build constructs (`bake`)
 - In-container driver support (both Docker and Kubernetes)
 
 # Table of Contents
@@ -159,6 +159,8 @@ Currently, the bake command supports building images from compose files, similar
 
 There is also support for custom build rules from HCL/JSON files allowing better code reuse and different target groups. The design of bake is in very early stages and we are looking for feedback from users.
 
+[`buildx bake` Reference Docs](docs/reference/buildx_bake.md)
+
 # Setting buildx as default builder in Docker 19.03+
 
 Running `docker buildx install` sets up `docker builder` command as an alias to `docker buildx`. This results in the ability to have `docker build` use the current buildx builder.

docs/reference/buildx_bake.md

@@ -33,6 +33,10 @@ Build from a file
 Bake is a high-level build command. Each specified target will run in parallel
 as part of the build.
 
+Read [High-level build options](https://github.com/docker/buildx#high-level-build-options) for introduction.
+
+Please note that `buildx bake` command may receive backwards incompatible features in the future if needed. We are looking for feedback on improving the command and extending the functionality further.
+
 ## Examples
 
 ### <a name="file"></a> Specify a build definition file (-f, --file)