Docker Buildx: New Features, Upgrades, and Bug Fixes

it can be shown in provenance for later debugging. Previously this only happened when building from a Git URL directly. To opt-out of this behavior you can set `BUILDX_GIT_INFO=0`. Optionally you can also automatically define labels with VCS info by setting `BUILDX_GIT_LABELS=1`. [docker/buildx#1462](https://github.com/docker/buildx/issues/1462), [docker/buildx#1297](https://github.com/docker/buildx), [docker/buildx#1341](https://github.com/docker/buildx/issues/1341), [docker/buildx#1468](https://github.com/docker/buildx), [docker/buildx#1477](https://github.com/docker/buildx/issues/1477) - Named contexts with `--build-context` now support `oci-layout://` protocol for initializing the context with a value of a local OCI layout directory. E.g. `--build-context stagename=oci-layout://path/to/dir`. This feature requires BuildKit v0.11.0+ and Dockerfile 1.5.0+. [docker/buildx#1456](https://github.com/docker/buildx/issues/1456) - Bake now supports [resource interpolation](bake/inheritance.md#reusing-single-attribute-from-targets) where you can reuse the values from other target definitions. [docker/buildx#1434](https://github.com/docker/buildx/issues/1434) - Buildx will now automatically forward `SOURCE_DATE_EPOCH` environment variable if it is defined in your environment. This feature is meant to be used with updated [reproducible builds](https://github.com/moby/buildkit/blob/master/docs/build-repro.md) support in BuildKit v0.11.0+. [docker/buildx#1482](https://github.com/docker/buildx/issues/1482) - Buildx now remembers the last activity for a builder for better organization of builder instances. [docker/buildx#1439](https://github.com/docker/buildx/issues/1439) - Bake definition now supports null values for [variables](bake/reference.md#variable) and [labels](bake/reference.md#targetlabels) for build arguments and labels to use the defaults set in the Dockerfile. [docker/buildx#1449](https://github.com/docker/buildx/issues/1449) - The [`buildx imagetools inspect` command](/reference/cli/docker/buildx/imagetools/inspect.md) now supports showing SBOM and Provenance data. [docker/buildx#1444](https://github.com/docker/buildx/issues/1444), [docker/buildx#1498](https://github.com/docker/buildx/issues/1498) - Increase performance of `ls` command and inspect flows. [docker/buildx#1430](https://github.com/docker/buildx/issues/1430), [docker/buildx#1454](https://github.com/docker/buildx/issues/1454), [docker/buildx#1455](https://github.com/docker/buildx/issues/1455), [docker/buildx#1345](https://github.com/docker/buildx/issues/1345) - Adding extra hosts with [Docker driver](/manuals/build/builders/drivers/docker.md) now supports Docker-specific `host-gateway` special value. [docker/buildx#1446](https://github.com/docker/buildx/issues/1446) - [OCI exporter](exporters/oci-docker.md) now supports `tar=false` option for exporting OCI format directly in a directory. [docker/buildx#1420](https://github.com/docker/buildx/issues/1420) ### Upgrades - Updated the Compose Specification to 1.6.0. [docker/buildx#1387](https://github.com/docker/buildx/issues/1387) ### Bug fixes and enhancements - `--invoke` can now load default launch environment from the image metadata. [docker/buildx#1324](https://github.com/docker/buildx/issues/1324) - Fix container driver behavior in regards to UserNS. [docker/buildx#1368](https://github.com/docker/buildx/issues/1368) - Fix possible panic in Bake when using wrong variable value type. [docker/buildx#1442](https://github.com/docker/buildx/issues/1442) - Fix possible panic in `imagetools inspect`. [docker/buildx#1441](https://github.com/docker/buildx/issues/1441) [docker/buildx#1406](https://github.com/docker/buildx/issues/1406) - Fix sending empty `--add-host` value to BuildKit by default. [docker/buildx#1457](https://github.com/docker/buildx/issues/1457) - Fix handling progress prefixes with progress groups. [docker/buildx#1305](https://github.com/docker/buildx/issues/1305)

This section details new features, upgrades, and bug fixes in Docker Buildx. It includes automatic VCS info sharing (opt-out with `BUILDX_GIT_INFO=0`, labels with `BUILDX_GIT_LABELS=1`), support for `oci-layout://` in named contexts, resource interpolation in Bake, automatic forwarding of `SOURCE_DATE_EPOCH`, improved builder instance organization, null value support in Bake, SBOM/Provenance data in `buildx imagetools inspect`, performance improvements, `host-gateway` support for Docker driver, and `tar=false` option for OCI exporter. Upgrades include Compose Specification to 1.6.0. Bug fixes address issues with `--invoke`, UserNS, Bake variable types, `imagetools inspect`, `--add-host`, and progress prefixes.