This document describes the latest changes, additions, known issues, and fixesfor Docker Engine.

Windows Windows 10 Pro Anniversary Edition (Version 1607, OS Build ) Windows 10 Pro Creators Update (Version 1703, OS Build 15063.138) WSL Ubuntu 14.04.5 LTS Docker on Windows 17.03.1-ce, build c6d412e Docker on Ubuntu 17.03.1-ce, build c6d412e. The preferred choice for millions of developers that are building containerized apps. Docker Desktop is an application for MacOS and Windows machines for the building and sharing of containerized applications. Access Docker Desktop and follow the guided onboarding to build your first containerized application in minutes. Description I am using Docker version 1.12.5 on Windows 10 via Hyper-V and want to use container executables as commands in the current path. I built a Docker image that is running fine, but I hav.

Note:The client and container runtime are now in separate packages from the daemonin Docker Engine 18.09. Users should install and update all three packages atthe same time to get the latest patch releases. For example, on Ubuntu:sudo apt install docker-ce docker-ce-cli containerd.io. See the installinstructions for the corresponding linux distro for details.

20.10.5

2021-03-02

Client

  • Revert docker/cli#2960 to fix hanging in docker start --attach and remove spurious Unsupported signal: <nil>. Discarding messages. docker/cli#2987.

20.10.4

2021-02-26

Builder

  • Fix incorrect cache match for inline cache import with empty layers moby/moby#42061
  • Update BuildKit to v0.8.2 moby/moby#42061
    • resolver: avoid error caching on token fetch
    • fileop: fix checksum to contain indexes of inputs preventing certain cache misses
    • Fix reference count issues on typed errors with mount references (fixing invalid mutable ref errors)
    • git: set token only for main remote access allowing cloning submodules with different credentials
  • Ensure blobs get deleted in /var/lib/docker/buildkit/content/blobs/sha256 after pull. To clean up old state run builder prunemoby/moby#42065
  • Fix parallel pull synchronization regression moby/moby#42049
  • Ensure libnetwork state files do not leak moby/moby#41972

Client

  • Fix a panic on docker login if no config file is present docker/cli#2959
  • Fix WARNING: Error loading config file: .dockercfg: $HOME is not defineddocker/cli#2958

Runtime

  • docker info: silence unhandleable warnings moby/moby#41958
  • Avoid creating parent directories for XGlobalHeader moby/moby#42017
  • Use 0755 permissions when creating missing directories moby/moby#42017
  • Fallback to manifest list when no platform matches in image config moby/moby#42045moby/moby#41873
  • Fix a daemon panic on setups with a custom default runtime configured moby/moby#41974
  • Fix a panic when daemon configuration is empty moby/moby#41976
  • Fix daemon panic when starting container with invalid device cgroup rule moby/moby#42001
  • Fix userns-remap option when username & UID match moby/moby#42013
  • static: update runc binary to v1.0.0-rc93 moby/moby#42014

Logger

  • Honor labels-regex config even if labels is not set moby/moby#42046
  • Handle long log messages correctly preventing awslogs in non-blocking mode to split events bigger than 16kB mobymoby#41975

Rootless

  • Prevent the service hanging when stopping by setting systemd KillMode to mixed moby/moby#41956
  • dockerd-rootless.sh: add typo guard moby/moby#42070
  • Update rootlesskit to v0.13.1 to fix handling of IPv6 addresses moby/moby#42025
  • allow mknodding FIFO inside userns moby/moby#41957

Security

  • profiles: seccomp: update to Linux 5.11 syscall list moby/moby#41971

Swarm

  • Fix issue with heartbeat not persisting upon restart moby/moby#42060
  • Fix potential stalled tasks moby/moby#42060
  • Fix --update-order and --rollback-order flags when only --update-order or --rollback-order is provided docker/cli#2963
  • Fix docker service rollback returning a non-zero exit code in some situations docker/cli#2964
  • Fix inconsistent progress-bar direction on docker service rollbackdocker/cli#2964

20.10.3

Mac el capitan app store not working. 2021-02-01

Security

  • CVE-2021-21285 Prevent an invalid image from crashing docker daemon
  • CVE-2021-21284 Lock down file permissions to prevent remapped root from accessing docker state
  • Ensure AppArmor and SELinux profiles are applied when building with BuildKit

Client

Docker
  • Check contexts before importing them to reduce risk of extracted files escaping context store
  • Windows: prevent executing certain binaries from current directory docker/cli#2950
Windows

20.10.2

2021-01-04

Runtime

  • Fix a daemon start up hang when restoring containers with restart policies but that keep failing to start moby/moby#41729
  • overlay2: fix an off-by-one error preventing to build or run containers when data-root is 24-bytes long moby/moby#41830
  • systemd: send sd_notify STOPPING=1 when shutting down moby/moby#41832

Networking

  • Fix IPv6 port forwarding moby/moby#41805moby/libnetwork#2604

Swarm

  • Fix filtering for replicated-job and global-job service modes moby/moby#41806

Packaging

  • buildx updated to v0.5.1docker/docker-ce-packaging#516

20.10.1

2020-12-14

Builder

  • buildkit: updated to v0.8.1 with various bugfixes moby/moby#41793

Packaging

  • Revert a change in the systemd unit that could prevent docker from starting due to a startup order conflict docker/docker-ce-packaging#514
  • buildx updated to v0.5.0docker/docker-ce-packaging#515

20.10.0

2020-12-08

Deprecation / Removal

Docker Ce For Windows 10 Download

For an overview of all deprecated features, refer to the Deprecated Engine Features page.

  • Warnings and deprecation notice when docker pull-ing from non-compliant registries not supporting pull-by-digest docker/cli#2872
  • Sterner warnings and deprecation notice for unauthenticated tcp access moby/moby#41285
  • Deprecate KernelMemory (docker run --kernel-memory) moby/moby#41254docker/cli#2652
  • Deprecate aufs storage driver docker/cli#1484
  • Deprecate host-discovery and overlay networks with external k/v stores moby/moby#40614moby/moby#40510
  • Deprecate Dockerfile legacy ‘ENV name value’ syntax, use ENV name=value instead docker/cli#2743
  • Remove deprecated “filter” parameter for API v1.41 and up moby/moby#40491
  • Disable distribution manifest v2 schema 1 on push moby/moby#41295
  • Remove hack MalformedHostHeaderOverride breaking old docker clients (<= 1.12) in which case, set DOCKER_API_VERSIONmoby/moby#39076
  • Remove “docker engine” subcommands docker/cli#2207
  • Remove experimental “deploy” from “dab” files docker/cli#2216
  • Remove deprecated docker search --automated and --stars flags docker/cli#2338
  • No longer allow reserved namespaces in engine labels docker/cli#2326

API

  • Update API version to v1.41
  • Do not require “experimental” for metrics API moby/moby#40427
  • GET /events now returns prune events after pruning resources have completed moby/moby#41259
    • Prune events are returned for container, network, volume, image, and builder, and have a reclaimed attribute, indicating the amount of space reclaimed (in bytes)
  • Add one-shot stats option to not prime the stats moby/moby#40478
  • Adding OS version info to the system info’s API (/info) moby/moby#38349
  • Add DefaultAddressPools to docker info moby/moby#40714
  • Add API support for PidsLimit on services moby/moby#39882

Builder

  • buildkit,dockerfile: Support for RUN --mount options without needing to specify experimental dockerfile #syntax directive. moby/buildkit#1717
  • dockerfile: ARG command now supports defining multiple build args on the same line similarly to ENVmoby/buildkit#1692
  • dockerfile: --chown flag in ADD now allows parameter expansion moby/buildkit#1473
  • buildkit: Fetching authorization tokens has been moved to client-side (if the client supports it). Passwords do not leak into the build daemon anymore and users can see from build output when credentials or tokens are accessed. moby/buildkit#1660
  • buildkit: Connection errors while communicating with the registry for push and pull now trigger a retry moby/buildkit#1791
  • buildkit: Git source now supports token authentication via build secrets moby/moby#41234docker/cli#2656moby/buildkit#1533
  • buildkit: Building from git source now supports forwarding SSH socket for authentication moby/buildkit#1782
  • buildkit: Avoid builds that generate excessive logs to cause a crash or slow down the build. Clipping is performed if needed. moby/buildkit#1754
  • buildkit: Change default Seccomp profile to the one provided by Docker moby/buildkit#1807
  • buildkit: Support for exposing SSH agent socket on Windows has been improved moby/buildkit#1695
  • buildkit: Disable truncating by default when using --progress=plain moby/buildkit#1435
  • buildkit: Allow better handling client sessions dropping while it is being shared by multiple builds moby/buildkit#1551
  • buildkit: secrets: allow providing secrets with env moby/moby#41234docker/cli#2656moby/buildkit#1534
    • Support --secret id=foo,env=MY_ENV as an alternative for storing a secret value to a file.
    • --secret id=GIT_AUTH_TOKEN will load env if it exists and the file does not.
  • buildkit: Support for mirrors fallbacks, insecure TLS and custom TLS config moby/moby#40814
  • buildkit: remotecache: Only visit each item once when walking results moby/moby#41234moby/buildkit#1577
    • Improves performance and CPU use on bigger graphs
  • buildkit: Check remote when local image platform doesn’t match moby/moby#40629
  • buildkit: image export: Use correct media type when creating new layer blobs moby/moby#41234moby/buildkit#1541
  • buildkit: progressui: fix logs time formatting moby/moby#41234docker/cli#2656moby/buildkit#1549
  • buildkit: mitigate containerd issue on parallel push moby/moby#41234moby/buildkit#1548
  • buildkit: inline cache: fix handling of duplicate blobs moby/moby#41234moby/buildkit#1568
    • Fixes https://github.com/moby/buildkit/issues/1388 cache-from working unreliably
    • Fixes https://github.com/moby/moby/issues/41219 Image built from cached layers is missing data
  • Allow ssh:// for remote context URLs moby/moby#40179
  • builder: remove legacy build’s session handling (was experimental) moby/moby#39983

Client

  • Add swarm jobs support to CLI docker/cli#2262
  • Add -a/--all-tags to docker push docker/cli#2220
  • Add support for Kubernetes username/password auth docker/cli#2308
  • Add --pull=missing always never to run and create commands docker/cli#1498
  • Add --env-file flag to docker exec for parsing environment variables from a file docker/cli#2602
  • Add shorthand -n for --tail option docker/cli#2646
  • Add log-driver and options to service inspect “pretty” format docker/cli#1950
  • docker run: specify cgroup namespace mode with --cgroupnsdocker/cli#2024
  • docker manifest rm command to remove manifest list draft from local storage docker/cli#2449
  • Add “context” to “docker version” and “docker info” docker/cli#2500
  • Propagate platform flag to container create API docker/cli#2551
  • The docker ps --format flag now has a .State placeholder to print the container’s state without additional details about uptime and health check docker/cli#2000
  • Add support for docker-compose schema v3.9 docker/cli#2073
  • Add support for docker push --quietdocker/cli#2197
  • Hide flags that are not supported by BuildKit, if BuildKit is enabled docker/cli#2123
  • Update flag description for docker rm -v to clarify the option only removes anonymous (unnamed) volumes docker/cli#2289
  • Improve tasks printing for docker services docker/cli#2341
  • docker info: list CLI plugins alphabetically docker/cli#2236
  • Fix order of processing of --label-add/--label-rm, --container-label-add/--container-label-rm, and --env-add/--env-rm flags on docker service update to allow replacing existing values docker/cli#2668
  • Fix docker rm --force returning a non-zero exit code if one or more containers did not exist docker/cli#2678
  • Improve memory stats display by using total_inactive_file instead of cachedocker/cli#2415
  • Mitigate against YAML files that has excessive aliasing docker/cli#2117
  • Allow using advanced syntax when setting a config or secret with only the source field docker/cli#2243
  • Fix reading config files containing username and password auth even if auth is empty docker/cli#2122
  • docker cp: prevent NPE when failing to stat destination docker/cli#2221
  • config: preserve ownership and permissions on configfile docker/cli#2228

Logging

  • Support reading docker logs with all logging drivers (best effort) moby/moby#40543
  • Add splunk-index-acknowledgment log option to work with Splunk HECs with index acknowledgment enabled moby/moby#39987
  • Add partial metadata to journald logs moby/moby#41407
  • Reduce allocations for logfile reader moby/moby#40796
  • Fluentd: add fluentd-async, fluentd-request-ack, and deprecate fluentd-async-connect moby/moby#39086

Runtime

  • Support cgroup2 moby/moby#40174moby/moby#40657moby/moby#40662
  • cgroup2: use “systemd” cgroup driver by default when available moby/moby#40846
  • new storage driver: fuse-overlayfs moby/moby#40483
  • Update containerd binary to v1.4.3 moby/moby#41732
  • docker push now defaults to latest tag instead of all tags moby/moby#40302
  • Added ability to change the number of reconnect attempts during connection loss while pulling an image by adding max-download-attempts to the config file moby/moby#39949
  • Add support for containerd v2 shim by using the now default io.containerd.runc.v2 runtime moby/moby#41182
  • cgroup v1: change the default runtime to io.containerd.runc.v2. Requires containerd v1.3.0 or later. v1.3.5 or later is recommended moby/moby#41210
  • Start containers in their own cgroup namespaces moby/moby#38377
  • Enable DNS Lookups for CIFS Volumes moby/moby#39250
  • Use MemAvailable instead of MemFree to estimate actual available memory moby/moby#39481
  • The --device flag in docker run will now be honored when the container is started in privileged mode moby/moby#40291
  • Enforce reserved internal labels moby/moby#40394
  • Raise minimum memory limit to 6M, to account for higher memory use by runtimes during container startup moby/moby#41168
  • Add support for CAP_PERFMON, CAP_BPF, and CAP_CHECKPOINT_RESTORE on supported kernels moby/moby#41460
  • vendor runc v1.0.0-rc92 moby/moby#41344moby/moby#41317
  • info: add warnings about missing blkio cgroup support moby/moby#41083
  • Accept platform spec on container create moby/moby#40725
  • Fix handling of looking up user- and group-names with spaces moby/moby#41377

Networking

  • Support host.docker.internal in dockerd on Linux moby/moby#40007
  • Include IPv6 address of linked containers in /etc/hosts moby/moby#39837
  • --ip6tables enables IPv6 iptables rules (only if experimental) moby/moby#41622
  • Add alias for hostname if hostname != container name moby/moby#39204
  • Better selection of DNS server (with systemd) moby/moby#41022
  • Add docker interfaces to firewalld docker zone moby/moby#41189moby/libnetwork#2548
    • Fixes DNS issue on CentOS8 docker/for-linux#957
    • Fixes Port Forwarding on RHEL 8 with Firewalld running with FirewallBackend=nftables moby/libnetwork#2496
  • Fix an issue reporting ‘failed to get network during CreateEndpoint’ moby/moby#41189moby/libnetwork#2554
  • Log error instead of disabling IPv6 router advertisement failed moby/moby#41189moby/libnetwork#2563
  • No longer ignore --default-address-pool option in certain cases moby/moby#40711
  • Produce an error with invalid address pool moby/moby#40808moby/libnetwork#2538
  • Fix DOCKER-USER chain not created when IPTableEnable=false moby/moby#40808moby/libnetwork#2471
  • Fix panic on startup in systemd environments moby/moby#40808moby/libnetwork#2544
  • Fix issue preventing containers to communicate over macvlan internal network moby/moby#40596moby/libnetwork#2407
  • Fix InhibitIPv4 nil panic moby/moby#40596
  • Fix VFP leak in Windows overlay network deletion moby/moby#40596moby/libnetwork#2524

Packaging

  • docker.service: Add multi-user.target to After= in unit file moby/moby#41297
  • docker.service: Allow socket activation moby/moby#37470
  • seccomp: Remove dependency in dockerd on libseccomp moby/moby#41395

Rootless

  • rootless: graduate from experimental moby/moby#40759
  • Add dockerd-rootless-setuptool.sh moby/moby#40950
  • Support --exec-opt native.cgroupdriver=systemdmoby/moby#40486

Security

Windows 10 Install Docker Ce

  • Fix CVE-2019-14271 loading of nsswitch based config inside chroot under Glibc moby/moby#39612
  • seccomp: Whitelist clock_adjtime. CAP_SYS_TIME is still required for time adjustment moby/moby#40929
  • seccomp: Add openat2 and faccessat2 to default seccomp profile moby/moby#41353
  • seccomp: allow ‘rseq’ syscall in default seccomp profile moby/moby#41158
  • seccomp: allow syscall membarrier moby/moby#40731
  • seccomp: whitelist io-uring related system calls moby/moby#39415
  • Add default sysctls to allow ping sockets and privileged ports with no capabilities moby/moby#41030
  • Fix seccomp profile for clone syscall moby/moby#39308

Swarm

Docker Ce On Windows 10

  • Add support for swarm jobs moby/moby#40307
  • Add capabilities support to stack/service commands docker/cli#2687docker/cli#2709moby/moby#39173moby/moby#41249
  • Add support for sending down service Running and Desired task counts moby/moby#39231
  • service: support --mount type=bind,bind-nonrecursivemoby/moby#38788
  • Support ulimits on Swarm services. moby/moby#41284docker/cli#2712
  • Fixed an issue where service logs could leak goroutines on the worker moby/moby#40426

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