Build release notes

This page contains information about the new features, improvements, and bug fixes in Docker Buildx.

0.18.0

New

• The docker buildx inspect command now displays BuildKit daemon configuration options set with a TOML file. docker/buildx#2684
• The docker buildx ls command output is now more compact by default by compacting the platform list. A new --no-trunc option can be used for the full list. docker/buildx#2138, docker/buildx#2717
• The docker buildx prune command now supports new --max-used-space and --min-free-space filters with BuildKit v0.17.0+ builders. docker/buildx#2766

Enhancements

• Allow capturing of CPU and memory profiles with pprof using the BUILDX_CPU_PROFILE and BUILDX_MEM_PROFILE environment variables. docker/buildx#2746
• Maximum Dockerfile size from standard input has increased. docker/buildx#2716, docker/buildx#2719
• Memory allocations have been reduced. docker/buildx#2724, docker/buildx#2713
• The --list-targets and --list-variables flags for docker buildx bake no longer require initialization of the builder. docker/buildx#2763

Bug fixes

• Check warnings now print the full filepath to the offending Dockerfile, relative to the current working directory. docker/buildx#2672
• Fallback images for the --check and --call options have been updated to correct references. docker/buildx#2705
• Fix issue with the build details link not showing in experimental mode. docker/buildx#2722
• Fix validation issue with invalid target linking for Bake. docker/buildx#2700
• Fix missing error message when running an invalid command. docker/buildx#2741
• Fix possible false warnings for local state in --call requests. docker/buildx#2754
• Fix potential issues with entitlements when using linked targets in Bake. docker/buildx#2701
• Fix possible permission issues when accessing local state after running Buildx with sudo. docker/buildx#2745

Packaging

• Compose compatibility has been updated to v2.4.1. docker/buildx#2760

0.17.1

The full release note for this release is available on GitHub.

Bug fixes

• Do not set network.host entitlement flag automatically on builder creation for the docker-container and kubernetes drivers if the entitlement is set in the BuildKit configuration file. docker/buildx#2685
• Do not print the network field with docker buildx bake --print when empty. docker/buildx#2689
• Fix telemetry socket path under WSL2. docker/buildx#2698

0.17.0

The full release note for this release is available on GitHub.

New

• Add basename, dirname and sanitize functions to Bake. docker/buildx#2649
• Enable support for Bake entitlements to allow privileged operations during builds. docker/buildx#2666

Enhancements

• Introduce CLI metrics tracking for Bake commands. docker/buildx#2610
• Add --debug to all build commands. Previously, it was only available on the top-level docker and docker buildx commands. docker/buildx#2660
• Allow builds from stdin for multi-node builders. docker/buildx#2656
• Improve kubernetes driver initialization. docker/buildx#2606
• Include target name in the error message when building multiple targets with Bake. docker/buildx#2651
• Optimize metrics handling to reduce performance overhead during progress tracking. docker/buildx#2641
• Display the number of warnings after completing a rule check. docker/buildx#2647
• Skip build ref and provenance metadata for frontend methods. docker/buildx#2650
• Add support for setting network mode in Bake files (HCL and JSON). docker/buildx#2671
• Support the --metadata-file flag when set along the --call flag. docker/buildx#2640
• Use shared session for local contexts used by multiple Bake targets. docker/buildx#2615, docker/buildx#2607, docker/buildx#2663

Bug fixes

• Improve memory management to avoid unnecessary allocations. docker/buildx#2601

Packaging updates

• Compose support has been updated to v2.1.6. docker/buildx#2547

0.16.2

The full release note for this release is available on GitHub.

Bug fixes

• Fix possible "bad file descriptor" error when exporting local cache to NFS volume docker/buildx#2629

0.16.1

The full release note for this release is available on GitHub.

Bug fixes

• Fix possible panic due to data race in buildx bake --print command docker/buildx#2603
• Improve messaging about using --debug flag to inspect build warnings docker/buildx#2612

0.16.0

The full release note for this release is available on GitHub.

New

• Bake command now supports --call and --check flags and call attribute in target definitions for selecting custom frontend methods. docker/buildx#2556, docker/buildx#2576
• Experimental Bake now supports --list-targets and --list-variables flags for inspecting the definition and possible configuration options for your project. docker/buildx#2556
• Bake definition variables and targets supports new description attribute for defining text-based description that can be inspected using e.g. --list-targets and --list-variables. docker/buildx#2556
• Bake now supports printing warnings for build check violations. docker/buildx#2501

Enhancements

• The build command now ensures that multi-node builds use the same build reference for each node. docker/buildx#2572
• Avoid duplicate requests and improve the performance of remote driver. docker/buildx#2501
• Build warnings can now be saved to the metadata file by setting the BUILDX_METADATA_WARNINGS=1 environment variable. docker/buildx#2551, docker/buildx#2521, docker/buildx#2550
• Improve message of the --check flag when no warnings are detected. docker/buildx#2549

Bug fixes

• Fix support for multi-type annotations during build. docker/buildx#2522
• Fix a regression where possible inefficient transfer of files would occur when switching projects due to incremental transfer reuse. docker/buildx#2558
• Fix incorrect default load for chained Bake targets. docker/buildx#2583
• Fix incorrect COMPOSE_PROJECT_NAME handling in Bake. docker/buildx#2579
• Fix index annotations support for multi-node builds. docker/buildx#2546
• Fix capturing provenance metadata for builds from remote context. docker/buildx#2560

Packaging updates

• Compose support has been updated to v2.1.3. docker/buildx#2547

0.15.1

The full release note for this release is available on GitHub.

Bug fixes

• Fix missing build error and exit code for some validation requests with --check. docker/buildx#2518
• Update fallback image for --check to Dockerfile v1.8.1. docker/buildx#2538

0.15.0

The full release note for this release is available on GitHub.

New

• New --call option allows setting evaluation method for a build, replacing the previous experimental --print flag. docker/buildx#2498, docker/buildx#2487, docker/buildx#2513

  In addition to the default build method, the following methods are implemented by Dockerfile frontend:

  • --call=check: Run validation routines for your build configuration. For more information about build checks, see Build checks
  • --call=outline: Show configuration that would be used by current build, including all build arguments, secrets, SSH mounts, etc., that your build would use.
  • --call=targets: Show all available targets and their descriptions.

• New --prefer-index flag has been added to the docker buildx imagetools create command to control the behavior of creating image out of one single-platform image manifest. docker/buildx#2482

• The kubernetes driver now supports a timeout option for configuring deployment timeout. docker/buildx#2492

• New metrics definitions have been added for build warning types. docker/buildx#2482, docker/buildx#2507

• The buildx prune and buildx du commands now support negative and prefix filters. docker/buildx#2473

• Building Compose files with Bake now supports passing SSH forwarding configuration. docker/buildx#2445

• Fix issue with configuring the kubernetes driver with custom TLS certificates. docker/buildx#2454

• Fix concurrent kubeconfig access when loading nodes. docker/buildx#2497

Packaging updates

• Compose support has been updated to v2.1.2. docker/buildx#2502, docker/buildx#2425

0.14.0

The full release note for this release is available on GitHub.

Enhancements

• Add support for --print=lint (experimental). docker/buildx#2404, docker/buildx#2406
• Fix JSON formatting for custom implementations of print sub-requests in frontends. docker/buildx#2374
• Provenance records are now set when building with --metadata-file. docker/buildx#2280
• Add Git authentication support for remote definitions. docker/buildx#2363
• New default-load driver option for the docker-container, remote, and kubernetes drivers to load build results to the Docker Engine image store by default. docker/buildx#2259
• Add requests.ephemeral-storage, limits.ephemeral-storage and schedulername options to the kubernetes driver. docker/buildx#2370, docker/buildx#2415
• Add indexof function for docker-bake.hcl files. docker/buildx#2384
• OpenTelemetry metrics for Buildx now measure durations of idle time, image exports, run operations, and image transfers for image source operations during build. docker/buildx#2316, docker/buildx#2317, docker/buildx#2323, docker/buildx#2271
• Build progress metrics to the OpenTelemetry endpoint associated with the desktop-linux context no longer requires Buildx in experimental mode (BUILDX_EXPERIMENTAL=1). docker/buildx#2344

Bug fixes

• Fix --load and --push incorrectly overriding outputs when used with multiple Bake file definitions. docker/buildx#2336
• Fix build from stdin with experimental mode enabled. docker/buildx#2394
• Fix an issue where delegated traces could be duplicated. docker/buildx#2362

Packaging updates

• Compose support has been updated to v2.26.1 (via compose-go v2.0.2). docker/buildx#2391

0.13.1

The full release note for this release is available on GitHub.

Bug fixes

• Fix connecting to docker-container:// and kube-pod:// style URLs with remote driver. docker/buildx#2327
• Fix handling of --push with Bake when a target has already defined a non-image output. docker/buildx#2330

0.13.0

The full release note for this release is available on GitHub.

New

• New docker buildx dial-stdio command for directly contacting BuildKit daemon of the configured builder instance. docker/buildx#2112
• Windows container builders can now be created using the remote driver and npipe connections. docker/buildx#2287
• Npipe URL scheme is now supported on Windows. docker/buildx#2250
• Experimental Buildx can now export OpenTelemetry metrics for build duration and transfer sizes. docker/buildx#2235, docker/buildx#2258 docker/buildx#2225 docker/buildx#2224 docker/buildx#2155

Enhancements

• Bake command now supports defining shm-size and ulimit values. docker/buildx#2279, docker/buildx#2242
• Better handling of connecting to unhealthy nodes with remote driver. docker/buildx#2130
• Builders using the docker-container and kubernetes drivers now allow network.host entitlement by default (allowing access to the container's network). docker/buildx#2266
• Builds can now use multiple outputs with a single command (requires BuildKit v0.13+). docker/buildx#2290, docker/buildx#2302
• Default Git repository path is now found via configured tracking branch. docker/buildx#2146
• Fix possible cache invalidation when using linked targets in Bake. docker/buildx#2265
• Fixes for Git repository path sanitization in WSL. docker/buildx#2167
• Multiple builders can now be removed with a single command. docker/buildx#2140
• New cancellation signal handling via Unix socket. docker/buildx#2184 docker/buildx#2289
• The Compose spec support has been updated to v2.0.0-rc.8. docker/buildx#2205
• The --config flag for docker buildx create was renamed to --buildkitd-config. docker/buildx#2268
• The --metadata-file flag for docker buildx build can now also return build reference that can be used for further build debugging, for example, in Docker Desktop. docker/buildx#2263
• The docker buildx bake command now shares the same authentication provider for all targets for improved performance. docker/buildx#2147
• The docker buildx imagetools inspect command now shows DSSE-signed SBOM and Provenance attestations. docker/buildx#2194
• The docker buildx ls command now supports --format options for controlling the output. docker/buildx#1787
• The docker-container driver now supports driver options for defining restart policy for BuildKit container. docker/buildx#1271
• VCS attributes exported from Buildx now include the local directory sub-paths if they're relative to the current Git repository. docker/buildx#2156
• --add-host flag now permits a = separator for IPv6 addresses. docker/buildx#2121

Bug fixes

• Fix additional output when exporting progress with --progress=rawjson docker/buildx#2252
• Fix possible console warnings on Windows. docker/buildx#2238
• Fix possible inconsistent configuration merge order when using Bake with many configurations. docker/buildx#2237
• Fix possible panic in the docker buildx imagetools create command. docker/buildx#2230

0.12.1

The full release note for this release is available on GitHub.

Bug fixes and enhancements

• Fix incorrect validation of some --driver-opt values that could cause a panic and corrupt state to be stored. docker/buildx#2176

0.12.0

The full release note for this release is available on GitHub.

New

• New --annotation flag for the buildx build, and an annotations key in the Bake file, that lets you add OCI Annotations to build results. #2020, #2098
• New experimental debugging features, including a new debug command and an interactive debugging console. This feature currently requires setting BUILDX_EXPERIMENTAL=1. #2006, #1896, #1970, #1914, #2026, #2086

Bug fixes and enhancements

• The special host-gateway IP mapping can now be used with the --add-host flag during build. #1894, #2083
• Bake now allows adding local source files when building from remote definition. #1838
• The status of uploading build results to Docker is now shown interactively on progress bar. #1994
• Error handling has been improved when bootstrapping multi-node build clusters. #1869
• The buildx imagetools create command now allows adding annotation when creating new images in the registry. #1965
• OpenTelemetry build trace delegation from buildx is now possible with Docker and Remote driver. #2034
• Bake command now shows all files where the build definition was loaded from on the progress bar. #2076
• Bake files now allow the same attributes to be defined in multiple definition files. #1062
• Using the Bake command with a remote definition now allows this definition to use local Dockerfiles. #2015
• Docker container driver now explicitly sets BuildKit config path to make sure configurations are loaded from same location for both mainline and rootless images. #2093
• Improve performance of detecting when BuildKit instance has completed booting. #1934
• Container driver now accepts many new driver options for defining the resource limits for BuildKit container. #2048
• Inspection commands formatting has been improved. #2068
• Error messages about driver capabilities have been improved. #1998
• Improve errors when invoking Bake command without targets. #2100
• Allow enabling debug logs with environment variables when running in standalone mode. #1821
• When using Docker driver the default image resolve mode has been updated to prefer local Docker images for backward compatibility. #1886
• Kubernetes driver now allows setting custom annotations and labels to the BuildKit deployments and pods. #1938
• Kubernetes driver now allows setting authentication token with endpoint configuration. #1891
• Fix possible issue with chained targets in Bake that could result in build failing or local source for a target uploaded multiple times. #2113
• Fix issue when accessing global target properties when using the matrix feature of the Bake command. #2106
• Fixes for formatting validation of certain build flags #2040
• Fixes to avoid locking certain commands unnecessarily while booting builder nodes. #2066
• Fix cases where multiple builds try to bootstrap the same builder instance in parallel. #2000
• Fix cases where errors on uploading build results to Docker could be dropped in some cases. #1927
• Fix detecting capabilities for missing attestation support based on build output. #1988
• Fix the build for loading in Bake remote definition to not show up in build history records. #1961, #1954
• Fix errors when building Compose files using the that define profiles with Bake. #1903
• Fix possible time correction errors on progress bar. #1968
• Fix passing custom cgroup parent to builds that used the new controller interface. #1913

Packaging

• Compose support has been updated to 1.20, enabling "include" functionality when using the Bake command. #1971, #2065, #2094

0.11.2

The full release note for this release is available on GitHub.

Bug fixes and enhancements

• Fix a regression that caused buildx to not read the KUBECONFIG path from the instance store. docker/buildx#1941
• Fix a regression with result handle builds showing up in the build history incorrectly. docker/buildx#1954

0.11.1

The full release note for this release is available on GitHub.

Bug fixes and enhancements

• Fix a regression for bake where services in profiles would not be loaded. docker/buildx#1903
• Fix a regression where --cgroup-parent option had no effect during build. docker/buildx#1913
• Fix a regression where valid docker contexts could fail buildx builder name validation. docker/buildx#1879
• Fix a possible panic when terminal is resized during the build. docker/buildx#1929

0.11.0

The full release note for this release is available on GitHub.

New

• Bake now supports matrix builds. The new matrix field on target lets you create multiple similar targets to remove duplication in bake files. docker/buildx#1690
• New experimental --detach flag for running builds in detached mode. docker/buildx#1296, docker/buildx#1620, docker/buildx#1614, docker/buildx#1737, docker/buildx#1755
• New experimental debug monitor mode that lets you start a debug session in your builds. docker/buildx#1626, docker/buildx#1640
• New EXPERIMENTAL_BUILDKIT_SOURCE_POLICY environment variable for applying a BuildKit source policy file. docker/buildx#1628

Bug fixes and enhancements

• --load now supports loading multi-platform images when the containerd image store is enabled. docker/buildx#1813
• Build progress output now displays the name of the builder being used. docker/buildx#1177
• Bake now supports detecting compose.{yml,yaml} files. docker/buildx#1752
• Bake now supports new compose build keys dockerfile_inline and additional_contexts. docker/buildx#1784
• Bake now supports replace HCL function. docker/buildx#1720
• Bake now allows merging multiple similar attestation parameters into a single parameter to allow overriding with a single global value. docker/buildx#1699
• Initial support for shell completion. docker/buildx#1727
• BuildKit versions now correctly display in buildx ls and buildx inspect for builders using the docker driver. docker/buildx#1552
• Display additional builder node details in buildx inspect view. docker/buildx#1440, docker/buildx#1854
• Builders using the remote driver allow using TLS without proving its own key/cert (if BuildKit remote is configured to support it) docker/buildx#1693
• Builders using the kubernetes driver support a new serviceaccount option, which sets the serviceAccountName of the Kubernetes pod. docker/buildx#1597
• Builders using the kubernetes driver support the proxy-url option in the kubeconfig file. docker/buildx#1780
• Builders using the kubernetes are now automatically assigned a node name if no name is explicitly provided. docker/buildx#1673
• Fix invalid path when writing certificates for docker-container driver on Windows. docker/buildx#1831
• Fix bake failure when remote bake file is accessed using SSH. docker/buildx#1711, docker/buildx#1734
• Fix bake failure when remote bake context is incorrectly resolved. docker/buildx#1783
• Fix path resolution of BAKE_CMD_CONTEXT and cwd:// paths in bake contexts. docker/buildx#1840
• Fix mixed OCI and Docker media types when creating images using buildx imagetools create. docker/buildx#1797
• Fix mismatched image id between --iidfile and -q. docker/buildx#1844
• Fix AWS authentication when mixing static creds and IAM profiles. docker/buildx#1816

0.10.4

Note

Buildx v0.10 enables support for a minimal SLSA Provenance attestation, which requires support for OCI-compliant multi-platform images. This may introduce issues with registry and runtime support (e.g. Google Cloud Run and AWS Lambda). You can optionally disable the default provenance attestation functionality using --provenance=false.

Bug fixes and enhancements

• Add BUILDX_NO_DEFAULT_ATTESTATIONS as alternative to --provenance false. docker/buildx#1645
• Disable dirty Git checkout detection by default for performance. Can be enabled with BUILDX_GIT_CHECK_DIRTY opt-in. docker/buildx#1650
• Strip credentials from VCS hint URL before sending to BuildKit. docker/buildx#1664

0.10.3

Note

Buildx v0.10 enables support for a minimal SLSA Provenance attestation, which requires support for OCI-compliant multi-platform images. This may introduce issues with registry and runtime support (e.g. Google Cloud Run and AWS Lambda). You can optionally disable the default provenance attestation functionality using --provenance=false.

Bug fixes and enhancements

• Fix reachable commit and warnings on collecting Git provenance info. docker/buildx#1592, docker/buildx#1634
• Fix a regression where docker context was not being validated. docker/buildx#1596
• Fix function resolution with JSON bake definition. docker/buildx#1605
• Fix case where original HCL bake diagnostic is discarded. docker/buildx#1607
• Fix labels not correctly set with bake and compose file. docker/buildx#1631

0.10.2

Note

Buildx v0.10 enables support for a minimal SLSA Provenance attestation, which requires support for OCI-compliant multi-platform images. This may introduce issues with registry and runtime support (e.g. Google Cloud Run and AWS Lambda). You can optionally disable the default provenance attestation functionality using --provenance=false.

Bug fixes and enhancements

• Fix preferred platforms order not taken into account in multi-node builds. docker/buildx#1561
• Fix possible panic on handling SOURCE_DATE_EPOCH environment variable. docker/buildx#1564
• Fix possible push error on multi-node manifest merge since BuildKit v0.11 on some registries. docker/buildx#1566
• Improve warnings on collecting Git provenance info. docker/buildx#1568

0.10.1

Note

Buildx v0.10 enables support for a minimal SLSA Provenance attestation, which requires support for OCI-compliant multi-platform images. This may introduce issues with registry and runtime support (e.g. Google Cloud Run and AWS Lambda). You can optionally disable the default provenance attestation functionality using --provenance=false.

Bug fixes and enhancements

• Fix sending the correct origin URL as vsc:source metadata. docker/buildx#1548
• Fix possible panic from data-race. docker/buildx#1504
• Fix regression with rm --all-inactive. docker/buildx#1547
• Improve attestation access in imagetools inspect by lazily loading data. docker/buildx#1546
• Correctly mark capabilities request as internal. docker/buildx#1538
• Detect invalid attestation configuration. docker/buildx#1545
• Update containerd patches to fix possible push regression affecting imagetools commands. docker/buildx#1559

0.10.0

Note

Buildx v0.10 enables support for a minimal SLSA Provenance attestation, which requires support for OCI-compliant multi-platform images. This may introduce issues with registry and runtime support (e.g. Google Cloud Run and AWS Lambda). You can optionally disable the default provenance attestation functionality using --provenance=false.

New

• The buildx build command supports new --attest flag, along with shorthands --sbom and --provenance, for adding attestations for your current build. docker/buildx#1412 docker/buildx#1475
  • --attest type=sbom or --sbom=true adds SBOM attestations.
  • --attest type=provenance or --provenance=true adds SLSA provenance attestation.
  • When creating OCI images, a minimal provenance attestation is included with the image by default.
• When building with BuildKit that supports provenance attestations Buildx will automatically share the version control information of your build context, so 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, docker/buildx#1297, docker/buildx#1341, docker/buildx#1468, docker/buildx#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
• Bake now supports resource interpolation where you can reuse the values from other target definitions. docker/buildx#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 support in BuildKit v0.11.0+. docker/buildx#1482
• Buildx now remembers the last activity for a builder for better organization of builder instances. docker/buildx#1439
• Bake definition now supports null values for variables and labels for build arguments and labels to use the defaults set in the Dockerfile. docker/buildx#1449
• The buildx imagetools inspect command now supports showing SBOM and Provenance data. docker/buildx#1444, docker/buildx#1498
• Increase performance of ls command and inspect flows. docker/buildx#1430, docker/buildx#1454, docker/buildx#1455, docker/buildx#1345
• Adding extra hosts with Docker driver now supports Docker-specific host-gateway special value. docker/buildx#1446
• OCI exporter now supports tar=false option for exporting OCI format directly in a directory. docker/buildx#1420

Upgrades

• Updated the Compose Specification to 1.6.0. docker/buildx#1387

Bug fixes and enhancements

• --invoke can now load default launch environment from the image metadata. docker/buildx#1324
• Fix container driver behavior in regards to UserNS. docker/buildx#1368
• Fix possible panic in Bake when using wrong variable value type. docker/buildx#1442
• Fix possible panic in imagetools inspect. docker/buildx#1441 docker/buildx#1406
• Fix sending empty --add-host value to BuildKit by default. docker/buildx#1457
• Fix handling progress prefixes with progress groups. docker/buildx#1305
• Fix recursively resolving groups in Bake. docker/buildx#1313
• Fix possible wrong indentation on multi-node builder manifests. docker/buildx#1396
• Fix possible panic from missing OpenTelemetry configuration. docker/buildx#1383
• Fix --progress=tty behavior when TTY is not available. docker/buildx#1371
• Fix connection error conditions in prune and du commands. docker/buildx#1307

0.9.1

Bug fixes and enhancements

• The inspect command now displays the BuildKit version in use. docker/buildx#1279
• Fixed a regression when building Compose files that contain services without a build block. docker/buildx#1277

For more details, see the complete release notes in the Buildx GitHub repository.

0.9.0

New

• Support for a new remote driver that you can use to connect to any already running BuildKit instance. docker/buildx#1078, docker/buildx#1093, docker/buildx#1094, docker/buildx#1103, docker/buildx#1134, docker/buildx#1204
• You can now load Dockerfile from standard input even when the build context is coming from external Git or HTTP URL. docker/buildx#994
• Build commands now support new the build context type oci-layout:// for loading build context from local OCI layout directories. Note that this feature depends on an unreleased BuildKit feature and builder instance from moby/buildkit:master needs to be used until BuildKit v0.11 is released. docker/buildx#1173
• You can now use the new --print flag to run helper functions supported by the BuildKit frontend performing the build and print their results. You can use this feature in Dockerfile to show the build arguments and secrets that the current build supports with --print=outline and list all available Dockerfile stages with --print=targets. This feature is experimental for gathering early feedback and requires enabling BUILDX_EXPERIMENTAL=1 environment variable. We plan to update/extend this feature in the future without keeping backward compatibility. docker/buildx#1100, docker/buildx#1272
• You can now use the new --invoke flag to launch interactive containers from build results for an interactive debugging cycle. You can reload these containers with code changes or restore them to an initial state from the special monitor mode. This feature is experimental for gathering early feedback and requires enabling BUILDX_EXPERIMENTAL=1 environment variable. We plan to update/extend this feature in the future without enabling backward compatibility. docker/buildx#1168, docker/buildx#1257, docker/buildx#1259
• Buildx now understands environment variable BUILDKIT_COLORS and NO_COLOR to customize/disable the colors of interactive build progressbar. docker/buildx#1230, docker/buildx#1226
• buildx ls command now shows the current BuildKit version of each builder instance. docker/buildx#998
• The bake command now loads .env file automatically when building Compose files for compatibility. docker/buildx#1261
• Bake now supports Compose files with cache_to definition. docker/buildx#1155
• Bake now supports new builtin function timestamp() to access current time. docker/buildx#1214
• Bake now supports Compose build secrets definition. docker/buildx#1069
• Additional build context configuration is now supported in Compose files via x-bake. docker/buildx#1256
• Inspecting builder now shows current driver options configuration. docker/buildx#1003, docker/buildx#1066

Updates

• Updated the Compose Specification to 1.4.0. docker/buildx#1246, docker/buildx#1251

Bug fixes and enhancements

• The buildx ls command output has been updated with better access to errors from different builders. docker/buildx#1109
• The buildx create command now performs additional validation of builder parameters to avoid creating a builder instance with invalid configuration. docker/buildx#1206
• The buildx imagetools create command can now create new multi-platform images even if the source subimages are located on different repositories or registries. docker/buildx#1137
• You can now set the default builder config that is used when creating builder instances without passing custom --config value. docker/buildx#1111
• Docker driver can now detect if dockerd instance supports initially disabled Buildkit features like multi-platform images. docker/buildx#1260, docker/buildx#1262
• Compose files using targets with . in the name are now converted to use _ so the selector keys can still be used in such targets. docker/buildx#1011
• Included an additional validation for checking valid driver configurations. docker/buildx#1188, docker/buildx#1273
• The remove command now displays the removed builder and forbids removing context builders. docker/buildx#1128
• Enable Azure authentication when using Kubernetes driver. docker/buildx#974
• Add tolerations handling for kubernetes driver. docker/buildx#1045 docker/buildx#1053
• Replace deprecated seccomp annotations with securityContext in the kubernetes driver. docker/buildx#1052
• Fix panic on handling manifests with nil platform. docker/buildx#1144
• Fix using duration filter with prune command. docker/buildx#1252
• Fix merging multiple JSON files on Bake definition. docker/buildx#1025
• Fix issues with implicit builder created from Docker context had invalid configuration or dropped connection. docker/buildx#1129
• Fix conditions for showing no-output warning when using named contexts. docker/buildx#968
• Fix duplicating builders when builder instance and docker context have the same name. docker/buildx#1131
• Fix printing unnecessary SSH warning logs. docker/buildx#1085
• Fix possible panic when using an empty variable block with Bake JSON definition. docker/buildx#1080
• Fix image tools commands not handling --builder flag correctly. docker/buildx#1067
• Fix using custom image together with rootless option. docker/buildx#1063

For more details, see the complete release notes in the Buildx GitHub repository.

0.8.2

Updates

• Update Compose spec used by buildx bake to v1.2.1 to fix parsing ports definition. docker/buildx#1033

Bug fixes and enhancements

• Fix possible crash on handling progress streams from BuildKit v0.10. docker/buildx#1042
• Fix parsing groups in buildx bake when already loaded by a parent group. docker/buildx#1021

For more details, see the complete release notes in the Buildx GitHub repository.

0.8.1

Bug fixes and enhancements

• Fix possible panic on handling build context scanning errors. docker/buildx#1005
• Allow . on Compose target names in buildx bake for backward compatibility. docker/buildx#1018

For more details, see the complete release notes in the Buildx GitHub repository.

0.8.0

New

• Build command now accepts --build-context flag to define additional named build contexts for your builds. docker/buildx#904
• Bake definitions now support defining dependencies between targets and using the result of one target in another build. docker/buildx#928, docker/buildx#965, docker/buildx#963, docker/buildx#962, docker/buildx#981
• imagetools inspect now accepts --format flag allowing access to config and buildinfo for specific images. docker/buildx#854, docker/buildx#972
• New flag --no-cache-filter allows configuring build, so it ignores cache only for specified Dockerfile stages. docker/buildx#860
• Builds can now show a summary of warnings sets by the building frontend. docker/buildx#892
• The new build argument BUILDKIT_INLINE_BUILDINFO_ATTRS allows opting-in to embed building attributes to resulting image. docker/buildx#908
• The new flag --keep-buildkitd allows keeping BuildKit daemon running when removing a builder
  • docker/buildx#852

Bug fixes and enhancements

• --metadata-file output now supports embedded structure types. docker/buildx#946
• buildx rm now accepts new flag --all-inactive for removing all builders that are not currently running. docker/buildx#885
• Proxy config is now read from Docker configuration file and sent with build requests for backward compatibility. docker/buildx#959
• Support host networking in Compose. docker/buildx#905, docker/buildx#880
• Bake files can now be read from stdin with -f -. docker/buildx#864
• --iidfile now always writes the image config digest independently of the driver being used (use --metadata-file for digest). docker/buildx#980
• Target names in Bake are now restricted to not use special characters. docker/buildx#929
• Image manifest digest can be read from metadata when pushed with docker driver. docker/buildx#989
• Fix environment file handling in Compose files. docker/buildx#905
• Show last access time in du command. docker/buildx#867
• Fix possible double output logs when multiple Bake targets run same build steps. docker/buildx#977
• Fix possible errors on multi-node builder building multiple targets with mixed platform. docker/buildx#985
• Fix some nested inheritance cases in Bake. docker/buildx#914
• Fix printing default group on Bake files. docker/buildx#884
• Fix UsernsMode when using rootless container. docker/buildx#887

For more details, see the complete release notes in the Buildx GitHub repository.

0.7.1

Fixes

• Fix issue with matching exclude rules in .dockerignore. docker/buildx#858
• Fix bake --print JSON output for current group. docker/buildx#857

For more details, see the complete release notes in the Buildx GitHub repository.

0.7.0

New features

• TLS certificates from BuildKit configuration are now transferred to build container with docker-container and kubernetes drivers. docker/buildx#787
• Builds support --ulimit flag for feature parity. docker/buildx#800
• Builds support --shm-size flag for feature parity. docker/buildx#790
• Builds support --quiet for feature parity. docker/buildx#740
• Builds support --cgroup-parent flag for feature parity. docker/buildx#814
• Bake supports builtin variable BAKE_LOCAL_PLATFORM. docker/buildx#748
• Bake supports x-bake extension field in Compose files. docker/buildx#721
• kubernetes driver now supports colon-separated KUBECONFIG. docker/buildx#761
• kubernetes driver now supports setting Buildkit config file with --config. docker/buildx#682
• kubernetes driver now supports installing QEMU emulators with driver-opt. docker/buildx#682

Enhancements

• Allow using custom registry configuration for multi-node pushes from the client. docker/buildx#825
• Allow using custom registry configuration for buildx imagetools command. docker/buildx#825
• Allow booting builder after creating with buildx create --bootstrap. docker/buildx#692
• Allow registry:insecure output option for multi-node pushes. docker/buildx#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
• Ensure different projects use separate destination directories for incremental context transfer for better performance. docker/buildx#817
• Build containers are now placed on separate cgroup by default. docker/buildx#782
• Bake now prints the default group with --print. docker/buildx#720
• docker driver now dials build session over HTTP for better performance. docker/buildx#804

Fixes

• Fix using --iidfile together with a multi-node push. docker/buildx#826
• Using --push in Bake does not clear other image export options in the file. docker/buildx#773
• Fix Git URL detection for buildx bake when https protocol was used. docker/buildx#822
• Fix pushing image with multiple names on multi-node builds. docker/buildx#815
• Avoid showing --builder flags for commands that don't use it. docker/buildx#818
• Unsupported build flags now show a warning. docker/buildx#810
• Fix reporting error details in some OpenTelemetry traces. docker/buildx#812

For more details, see the complete release notes in the Buildx GitHub repository.

0.6.3

Fixes

• Fix BuildKit state volume location for Windows clients. docker/buildx#751

For more details, see the complete release notes in the Buildx GitHub repository.

0.6.2

For more details, see the complete release notes in the Buildx GitHub repository.

Fixes

• Fix connection error showing up in some SSH configurations. docker/buildx#741

0.6.1

Enhancements

• Set ConfigFile to parse compose files with Bake. docker/buildx#704

Fixes

• Duplicate progress env var. docker/buildx#693
• Should ignore nil client. docker/buildx#686

For more details, see the complete release notes in the Buildx GitHub repository.

0.6.0

New features

• Support for OpenTelemetry traces and forwarding Buildx client traces to BuildKit. docker/buildx#635
• Experimental GitHub Actions remote cache backend with --cache-to type=gha and --cache-from type=gha. docker/buildx#535
• New --metadata-file flag has been added to build and Bake command that allows saving build result metadata in JSON format. docker/buildx#605
• This is the first release supporting Windows ARM64. docker/buildx#654
• This is the first release supporting Linux Risc-V. docker/buildx#652
• Bake now supports building from remote definition with local files or another remote source as context. docker/buildx#671
• Bake now allows variables to reference each other and using user functions in variables and vice-versa. docker/buildx#575, docker/buildx#539, docker/buildx#532
• Bake allows defining attributes in the global scope. docker/buildx#541
• Bake allows variables across multiple files. docker/buildx#538
• New quiet mode has been added to progress printer. docker/buildx#558
• kubernetes driver now supports defining resources/limits. docker/buildx#618
• Buildx binaries can now be accessed through buildx-bin Docker image. docker/buildx#656

Enhancements

• docker-container driver now keeps BuildKit state in volume. Enabling updates with keeping state. docker/buildx#672
• Compose parser is now based on new compose-go parser fixing support for some newer syntax. docker/buildx#669
• SSH socket is now automatically forwarded when building an ssh-based git URL. docker/buildx#581
• Bake HCL parser has been rewritten. docker/buildx#645
• Extend HCL support with more functions. docker/buildx#491 docker/buildx#503
• Allow secrets from environment variables. docker/buildx#488
• Builds with an unsupported multi-platform and load configuration now fail fast. docker/buildx#582
• Store Kubernetes config file to make buildx builder switchable. docker/buildx#497
• Kubernetes now lists all pods as nodes on inspection. docker/buildx#477
• Default Rootless image has been set to moby/buildkit:buildx-stable-1-rootless. docker/buildx#480

Fixes

• imagetools create command now correctly merges JSON descriptor with old one. docker/buildx#592
• Fix building with --network=none not requiring extra security entitlements. docker/buildx#531

For more details, see the complete release notes in the Buildx GitHub repository.

0.5.1

Fixes

• Fix regression on setting --platform on buildx create outside kubernetes driver. docker/buildx#475

For more details, see the complete release notes in the Buildx GitHub repository.

0.5.0

New features

• The docker driver now supports the --push flag. docker/buildx#442
• Bake supports inline Dockerfiles. docker/buildx#398
• Bake supports building from remote URLs and Git repositories. docker/buildx#398
• BUILDX_CONFIG env var allow users to have separate buildx state from Docker config. docker/buildx#385
• BUILDKIT_MULTI_PLATFORM build arg allows to force building multi-platform return objects even if only one --platform specified. docker/buildx#467

Enhancements

• Allow --append to be used with kubernetes driver. docker/buildx#370
• Build errors show error location in source files and system stacktraces with --debug. docker/buildx#389
• Bake formats HCL errors with source definition. docker/buildx#391
• Bake allows empty string values in arrays that will be discarded. docker/buildx#428
• You can now use the Kubernetes cluster config with the kubernetes driver. docker/buildx#368 docker/buildx#460
• Creates a temporary token for pulling images instead of sharing credentials when possible. docker/buildx#469
• Ensure credentials are passed when pulling BuildKit container image. docker/buildx#441 docker/buildx#433
• Disable user namespace remapping in docker-container driver. docker/buildx#462
• Allow --builder flag to switch to default instance. docker/buildx#425
• Avoid warn on empty BUILDX_NO_DEFAULT_LOAD config value. docker/buildx#390
• Replace error generated by quiet option by a warning. docker/buildx#403
• CI has been switched to GitHub Actions. docker/buildx#451, docker/buildx#463, docker/buildx#466, docker/buildx#468, docker/buildx#471

Fixes

• Handle lowercase Dockerfile name as a fallback for backward compatibility. docker/buildx#444

For more details, see the complete release notes in the Buildx GitHub repository.

0.4.2

New features

• Support cacheonly exporter. docker/buildx#337

Enhancements

• Update go-cty to pull in more stdlib functions. docker/buildx#277
• Improve error checking on load. docker/buildx#281

Fixes

• Fix parsing json config with HCL. docker/buildx#280
• Ensure --builder is wired from root options. docker/buildx#321
• Remove warning for multi-platform iidfile. docker/buildx#351

For more details, see the complete release notes in the Buildx GitHub repository.

0.4.1

Fixes

• Fix regression on flag parsing. docker/buildx#268
• Fix using pull and no-cache keys in HCL targets. docker/buildx#268

For more details, see the complete release notes in the Buildx GitHub repository.

0.4.0

New features

• Add kubernetes driver. docker/buildx#167
• New global --builder flag to override builder instance for a single command. docker/buildx#246
• New prune and du commands for managing local builder cache. docker/buildx#249
• You can now set the new pull and no-cache options for HCL targets. docker/buildx#165

Enhancements

• Upgrade Bake to HCL2 with support for variables and functions. docker/buildx#192
• Bake now supports --load and --push. docker/buildx#164
• Bake now supports wildcard overrides for multiple targets. docker/buildx#164
• Container driver allows setting environment variables via driver-opt. docker/buildx#170

For more details, see the complete release notes in the Buildx GitHub repository.

0.3.1

Enhancements

• Handle copying unix sockets instead of erroring. docker/buildx#155 moby/buildkit#1144

Fixes

• Running Bake with multiple Compose files now merges targets correctly. docker/buildx#134
• Fix bug when building a Dockerfile from stdin (build -f -). docker/buildx#153

For more details, see the complete release notes in the Buildx GitHub repository.

0.3.0

New features

• Custom buildkitd daemon flags. docker/buildx#102
• Driver-specific options on create. docker/buildx#122

Enhancements

• Environment variables are used in Compose files. docker/buildx#117
• Bake now honors --no-cache and --pull. docker/buildx#118
• Custom BuildKit config file. docker/buildx#121
• Entitlements support with build --allow. docker/buildx#104

Fixes

• Fix bug where --build-arg foo would not read foo from environment. docker/buildx#116

For more details, see the complete release notes in the Buildx GitHub repository.

0.2.2

Enhancements

• Change Compose file handling to require valid service specifications. docker/buildx#87

For more details, see the complete release notes in the Buildx GitHub repository.

0.2.1

New features

• Add BUILDKIT_PROGRESS env var. docker/buildx#69
• Add local platform. docker/buildx#70

Enhancements

• Keep arm variant if one is defined in the config. docker/buildx#68
• Make dockerfile relative to context. docker/buildx#83

Fixes

• Fix parsing target from compose files. docker/buildx#53

For more details, see the complete release notes in the Buildx GitHub repository.

0.2.0

New features

• First release

For more details, see the complete release notes in the Buildx GitHub repository.