Fix a regression that meant network interface specific --sysctl options prevented container startup. moby/moby#47646
Remove erroneous platform from image config OCI descriptor in docker save output. moby/moby#47694
containerd image store: OCI archives produced by docker save will now have a non-empty mediaType field in index.json moby/moby#47701
Fix a regression that prevented the internal resolver from forwarding requests from IPvlan L3 networks to external resolvers. moby/moby#47705
Prevent the use of external resolvers in IPvlan and Macvlan networks created with no parent interface specified. moby/moby#47705

Packaging updates

Update Go runtime to 1.21.9 moby/moby#47671, docker/cli#4987
Update Compose to v1.26.1 , docker/docker-ce-packaging#1009
Update containerd to v1.7.15 (static binaries only) moby/moby#47692

26.0.0

2024-03-20

本リリースにおけるプルリクエストや変更点の一覧は、対応する GitHub のマイルストーンを参照してください。

docker/cli, 26.0.0 milestone
moby/moby, 26.0.0 milestone
Deprecated and removed features, see Deprecated Features.
Changes to the Engine API, see API version history.

セキュリティ

This release contains a security fix for CVE-2024-29018, a potential data exfiltration from 'internal' networks via authoritative DNS servers.

New

Add Subpath field to the VolumeOptions making it possible to mount a subpath of a volume. moby/moby#45687
Add volume-subpath support to the mount flag (--mount type=volume,...,volume-subpath=<subpath>). docker/cli#4331
Accept = separators and [ipv6] in compose files for docker stack deploy. docker/cli#4860
rootless: Add support for enabling host loopback by setting the DOCKERD_ROOTLESS_ROOTLESSKIT_DISABLE_HOST_LOOPBACK environment variable to false (defaults to true). This lets containers connect to the host by using IP address 10.0.2.2. moby/moby#47352
containerd image store: docker image ls no longer creates duplicates entries for multi-platform images. moby/moby#45967
containerd image store: Send Prometheus metrics. moby/moby#47555

Bug fixes and enhancements

CVE-2024-29018: Do not forward requests to external DNS servers for a container that is only connected to an 'internal' network. Previously, requests were forwarded if the host's DNS server was running on a loopback address, like systemd's 127.0.0.53. moby/moby#47589
Ensure that a generated MAC address is not restored when a container is restarted, but a configured MAC address is preserved. moby/moby#47233
警告
Containers created using Docker Engine 25.0.0 may have duplicate MAC addresses, they must be re-created. Containers created using version 25.0.0 or 25.0.1 with user-defined MAC addresses will get generated MAC addresses when they are started using 25.0.2. They must also be re-created.
Always attempt to enable IPv6 on a container's loopback interface, and only include IPv6 in /etc/hosts if successful. moby/moby#47062
メモ
By default, IPv6 will remain enabled on a container's loopback interface when the container is not connected to an IPv6-enabled network. For example, containers that are only connected to an IPv4-only network now have the ::1 address on their loopback interface.
To disable IPv6 in a container, use option --sysctl net.ipv6.conf.all.disable_ipv6=1 in the create or run command, or the equivalent sysctls option in the service configuration section of a Compose file.
If IPv6 is not available in a container because it has been explicitly disabled for the container, or the host's networking stack does not have IPv6 enabled (or for any other reason) the container's /etc/hosts file will not include IPv6 entries.
Fix ADD Dockerfile instruction failing with lsetxattr <file>: operation not supported when unpacking archive with xattrs onto a filesystem that doesn't support them. moby/moby#47175
Fix docker container start failing when used with --checkpoint. moby/moby#47456
Restore IP connectivity between the host and containers on an internal bridge network. moby/moby#47356
Do not enforce new validation rules for existing swarm networks. moby/moby#47361
Restore DNS names for containers in the default "nat" network on Windows. moby/moby#47375
Print hint when invoking docker image ls with ambiguous argument. docker/cli#4849
Cleanup @docker_cli_[UUID] files on OpenBSD. docker/cli#4862
Add explicit deprecation notice message when using remote TCP connections without TLS. docker/cli#4928, moby/moby#47556
Use IPv6 nameservers from the host's resolv.conf as upstream resolvers for Docker Engine's internal DNS, rather than listing them in the container's resolv.conf. moby/moby#47512
containerd image store: Isolate images with different containerd namespaces when --userns-remap option is used. moby/moby#46786
containerd image store: Fix image pull not emitting Pulling fs layer status. moby/moby#47432

API

To preserve backwards compatibility, read-only mounts are not recursive by default when using older clients (API version < v1.44). moby/moby#47391
GET /images/{id}/json omits the Created field (previously it was 0001-01-01T00:00:00Z) if the Created field is missing from the image config. moby/moby#47451
Populate a missing Created field in GET /images/{id}/json with 0001-01-01T00:00:00Z for API version <= 1.43. moby/moby#47387
The is_automated field in the POST /images/search endpoint results is always false now. Consequently, searching for is-automated=true will yield no results, while is-automated=false will be a no-op. moby/moby#47465
Remove Container and ContainerConfig fields from the GET /images/{name}/json response. moby/moby#47430

Packaging updates

Update BuildKit to v0.13.1. moby/moby#47582
Update Buildx to v0.13.1. docker/docker-ce-packaging#1000
Update Compose to v2.25.0. docker/docker-ce-packaging#1002
Update Go runtime to 1.21.8. moby/moby#47502
Update RootlessKit to v2.0.2. moby/moby#47508
Update containerd to v1.7.13 (static binaries only) moby/moby#47278
Update runc binary to v1.1.12 moby/moby#47268
Update OTel to v0.46.1 / v1.21.0 moby/moby#47245

Removed

Remove Container and ContainerConfig fields from the GET /images/{name}/json response. moby/moby#47430
Deprecate the ability to accept remote TCP connections without TLS. Deprecation notice docker/cli#4928 moby/moby#47556.
Remove deprecated API versions (API < v1.24) moby/moby#47155
Disable pulling of deprecated image formats by default. These image formats are deprecated, and support will be removed in a future version. moby/moby#47459
image: remove deprecated IDFromDigest moby/moby#47198
Remove the deprecated github.com/docker/docker/pkg/loopback package. moby/moby#47128
pkg/system: remove deprecated ErrNotSupportedOperatingSystem, IsOSSupported moby/moby#47129
pkg/homedir: remove deprecated Key() and GetShortcutString() moby/moby#47130
pkg/containerfs: remove deprecated ResolveScopedPath moby/moby#47131
The daemon flag --oom-score-adjust was deprecated in v24.0 and is now removed. moby/moby#46113
Remove deprecated aliases from the api/types package. These types were deprecated in v25.0.0, which provided temporary aliases. moby/moby#47148 These aliases are now removed: types.Info, types.Commit, types.PluginsInfo, types.NetworkAddressPool, types.Runtime, types.SecurityOpt, types.KeyValue, types.DecodeSecurityOptions, types.CheckpointCreateOptions, types.CheckpointListOptions, types.CheckpointDeleteOptions, types.Checkpoint, types.ImageDeleteResponseItem, types.ImageSummary, types.ImageMetadata, types.ServiceUpdateResponse, types.ServiceCreateResponse, types.ResizeOptions, types.ContainerAttachOptions, types.ContainerCommitOptions, types.ContainerRemoveOptions, types.ContainerStartOptions, types.ContainerListOptions, types.ContainerLogsOptions
cli/command/container: remove deprecated NewStartOptions() docker/cli#4811
cli/command: remove deprecated DockerCliOption, InitializeOpt docker/cli#4810