Docker Buildx Release Notes: v0.7.1 and v0.7.0

- Fix some nested inheritance cases in Bake. [docker/buildx#914](https://github.com/docker/buildx/issues/914) - Fix printing default group on Bake files. [docker/buildx#884](https://github.com/docker/buildx/issues/884) - Fix `UsernsMode` when using rootless container. [docker/buildx#887](https://github.com/docker/buildx/issues/887) For more details, see the complete release notes in the [Buildx GitHub repository](https://github.com/docker/buildx/releases/tag/v0.8.0). ## 0.7.1 {{< release-date date="2021-08-25" >}} ### Fixes - Fix issue with matching exclude rules in `.dockerignore`. [docker/buildx#858](https://github.com/docker/buildx/issues/858) - Fix `bake --print` JSON output for current group. [docker/buildx#857](https://github.com/docker/buildx/issues/857) For more details, see the complete release notes in the [Buildx GitHub repository](https://github.com/docker/buildx/releases/tag/v0.7.1). ## 0.7.0 {{< release-date date="2021-11-10" >}} ### New features - TLS certificates from BuildKit configuration are now transferred to build container with `docker-container` and `kubernetes` drivers. [docker/buildx#787](https://github.com/docker/buildx/issues/787) - Builds support `--ulimit` flag for feature parity. [docker/buildx#800](https://github.com/docker/buildx/issues/800) - Builds support `--shm-size` flag for feature parity. [docker/buildx#790](https://github.com/docker/buildx/issues/790) - Builds support `--quiet` for feature parity. [docker/buildx#740](https://github.com/docker/buildx/issues/740) - Builds support `--cgroup-parent` flag for feature parity. [docker/buildx#814](https://github.com/docker/buildx/issues/814) - Bake supports builtin variable `BAKE_LOCAL_PLATFORM`. [docker/buildx#748](https://github.com/docker/buildx/issues/748) - Bake supports `x-bake` extension field in Compose files. [docker/buildx#721](https://github.com/docker/buildx/issues/721) - `kubernetes` driver now supports colon-separated `KUBECONFIG`. [docker/buildx#761](https://github.com/docker/buildx/issues/761) - `kubernetes` driver now supports setting Buildkit config file with `--config`. [docker/buildx#682](https://github.com/docker/buildx/issues/682) - `kubernetes` driver now supports installing QEMU emulators with driver-opt. [docker/buildx#682](https://github.com/docker/buildx/issues/682) ### Enhancements - Allow using custom registry configuration for multi-node pushes from the client. [docker/buildx#825](https://github.com/docker/buildx/issues/825) - Allow using custom registry configuration for `buildx imagetools` command. [docker/buildx#825](https://github.com/docker/buildx/issues/825) - Allow booting builder after creating with `buildx create --bootstrap`. [docker/buildx#692](https://github.com/docker/buildx/issues/692) - Allow `registry:insecure` output option for multi-node pushes. [docker/buildx#825](https://github.com/docker/buildx/issues/825) - BuildKit config and TLS files are now kept in Buildx state directory and reused if BuildKit instance needs to be recreated. [docker/buildx#824](https://github.com/docker/buildx/issues/824) - Ensure different projects use separate destination directories for incremental context transfer for better performance. [docker/buildx#817](https://github.com/docker/buildx/issues/817) - Build containers are now placed on separate cgroup by default. [docker/buildx#782](https://github.com/docker/buildx/issues/782) - Bake now prints the default group with `--print`. [docker/buildx#720](https://github.com/docker/buildx/issues/720) - `docker` driver now dials build session over HTTP for better performance. [docker/buildx#804](https://github.com/docker/buildx/issues/804) ### Fixes - Fix using `--iidfile` together with a multi-node push. [docker/buildx#826](https://github.com/docker/buildx/issues/826) - Using `--push` in Bake does not clear other image export options in the file. [docker/buildx#773](https://github.com/docker/buildx/issues/773) - Fix Git URL detection for `buildx bake` when `https` protocol was used. [docker/buildx#822](https://github.com/docker/buildx/issues/822)

This section summarizes the release notes for Docker Buildx versions 0.7.1 and 0.7.0. Version 0.7.1 addresses issues with `.dockerignore` matching and `bake --print` JSON output. Version 0.7.0 introduces new features such as TLS certificate transfer, support for feature parity flags like `--ulimit`, `--shm-size`, `--quiet`, and `--cgroup-parent`, the `BAKE_LOCAL_PLATFORM` variable, `x-bake` extension in Compose files, `KUBECONFIG` support for the kubernetes driver, and setting Buildkit config and installing QEMU emulators. Enhancements include custom registry configuration for multi-node pushes, the ability to bootstrap builders after creation, the `registry:insecure` output option, BuildKit config and TLS file reuse, separate destination directories, cgroup placement, `bake --print` for default groups, and HTTP dialing. Fixes include `--iidfile` with multi-node push, image export options with `--push` in Bake, and Git URL detection.