Merge pull request #22063 from crazy-max/buildx-0.21.0

build: buildx 0.21.0 release notes

content/manuals/build/cache/backends/gha.md

@@ -31,8 +31,9 @@ The following table describes the available CSV parameters that you can pass to
 `--cache-to` and `--cache-from`.
 
 | Name           | Option                  | Type        | Default                  | Description                                                          |
-| -------------- | ----------------------- | ----------- | ------------------------ | -------------------------------------------------------------------- |
+|----------------|-------------------------|-------------|--------------------------|----------------------------------------------------------------------|
 | `url`          | `cache-to`,`cache-from` | String      | `$ACTIONS_CACHE_URL`     | Cache server URL, see [authentication][1].                           |
+| `url_v2`       | `cache-to`,`cache-from` | String      | `$ACTIONS_CACHE_URL`     | Cache v2 server URL, see [authentication][1].                        |
 | `token`        | `cache-to`,`cache-from` | String      | `$ACTIONS_RUNTIME_TOKEN` | Access token, see [authentication][1].                               |
 | `scope`        | `cache-to`,`cache-from` | String      | `buildkit`               | Which scope cache object belongs to, see [scope][2]                  |
 | `mode`         | `cache-to`              | `min`,`max` | `min`                    | Cache layers to export, see [cache mode][3].                         |
@@ -47,10 +48,10 @@ The following table describes the available CSV parameters that you can pass to
 
 ## Authentication
 
-If the `url` or `token` parameters are left unspecified, the `gha` cache backend
+If the `url`, `url_v2` or `token` parameters are left unspecified, the `gha`
-will fall back to using environment variables. If you invoke the `docker buildx`
+cache backend will fall back to using environment variables. If you invoke the
-command manually from an inline step, then the variables must be manually
+`docker buildx` command manually from an inline step, then the variables must
-exposed. Consider using the
+be manually exposed. Consider using the
 [`crazy-max/ghaction-github-runtime`](https://github.com/crazy-max/ghaction-github-runtime),
 GitHub Action as a helper for exposing the variables.
 

content/manuals/build/release-notes.md

@@ -10,6 +10,34 @@ toc_max: 2
 This page contains information about the new features, improvements, and bug
 fixes in [Docker Buildx](https://github.com/docker/buildx).
 
+## 0.21.0
+
+{{< release-date date="2025-02-19" >}}
+
+The full release note for this release is available
+[on GitHub](https://github.com/docker/buildx/releases/tag/v0.21.0).
+
+### New
+
+- New command `buildx history trace` lets you inspect traces of a build in a Jaeger UI-based viewer and compare one trace with another. [docker/buildx#2904](https://github.com/docker/buildx/pull/2904)
+
+### Enhancements
+
+- The history inspection command `buildx history inspect` now supports custom formatting with `--format` flag and JSON formatting for machine-readable output. [docker/buildx#2964](https://github.com/docker/buildx/pull/2964) 
+- Support for CDI device entitlement in build and bake. [docker/buildx#2994](https://github.com/docker/buildx/pull/2994)
+- Supported CDI devices are now shown in the builder inspection. [docker/buildx#2983](https://github.com/docker/buildx/pull/2983)
+- When using [GitHub Cache backend `type=gha`](cache/backends/gha.md), the URL for the Version 2 or API is now read from the environment and sent to BuildKit. Version 2 backend requires BuildKit v0.20.0 or later. [docker/buildx#2983](https://github.com/docker/buildx/pull/2983), [docker/buildx#3001](https://github.com/docker/buildx/pull/3001)
+
+### Bug fixes
+
+- Avoid unnecessary warnings and prompts when using `--progress=rawjson`. [docker/buildx#2957](https://github.com/docker/buildx/pull/2957)
+- Fix regression with debug shell sometimes not working correctly on `--on=error`. [docker/buildx#2958](https://github.com/docker/buildx/pull/2958)
+- Fix possible panic errors when using an unknown variable in the Bake definition. [docker/buildx#2960](https://github.com/docker/buildx/pull/2960)
+- Fix invalid duplicate output on JSON format formatting of `buildx ls` command. [docker/buildx#2970](https://github.com/docker/buildx/pull/2970)
+- Fix bake handling cache imports with CSV string containing multiple registry references. [docker/buildx#2944](https://github.com/docker/buildx/pull/2944)
+- Fix issue where error from pulling BuildKit image could be ignored. [docker/buildx#2988](https://github.com/docker/buildx/pull/2988)
+- Fix race on pausing progress on debug shell. [docker/buildx#3003](https://github.com/docker/buildx/pull/3003)
+
 ## 0.20.1
 
 {{< release-date date="2025-01-23" >}}