- Prevent systemd from deleting containers' cgroups when its configuration is reloaded [#20518](https://github.com/docker/docker/pull/20518)
- Fix SELinux issues by disregarding `--read-only` when mounting `/dev/mqueue` [#20333](https://github.com/docker/docker/pull/20333)
- Fix chown permissions used during `docker cp` when userns is used [#20446](https://github.com/docker/docker/pull/20446)
- Fix configuration loading issue with all booleans defaulting to `true` [#20471](https://github.com/docker/docker/pull/20471)
- Fix occasional panic with `docker logs -f` [#20522](https://github.com/docker/docker/pull/20522)
### Distribution
- Keep layer reference if deletion failed to avoid a badly inconsistent state [#20513](https://github.com/docker/docker/pull/20513)
- Handle gracefully a corner case when canceling migration [#20372](https://github.com/docker/docker/pull/20372)
- Fix docker import on compressed data [#20367](https://github.com/docker/docker/pull/20367)
- Fix tar-split files corruption during migration that later cause docker push and docker save to fail [#20458](https://github.com/docker/docker/pull/20458)
### Networking
- Fix daemon crash if embedded DNS is sent garbage [#20510](https://github.com/docker/docker/pull/20510)
### Volumes
- Fix issue with multiple volume references with same name [#20381](https://github.com/docker/docker/pull/20381)
### Security
- Fix potential cache corruption and delegation conflict issues [#20523](https://github.com/docker/docker/pull/20523)
* Do not stop daemon on migration hard failure [#20156](https://github.com/docker/docker/pull/20156)
- Fix various issues with migration to content-addressable images [#20058](https://github.com/docker/docker/pull/20058)
- Fix ZFS permission bug with user namespaces [#20045](https://github.com/docker/docker/pull/20045)
- Do not leak /dev/mqueue from the host to all containers, keep it container-specific [#19876](https://github.com/docker/docker/pull/19876) [#20133](https://github.com/docker/docker/pull/20133)
- Fix issue where removing a network during shutdown left Docker inoperable [#20181](https://github.com/docker/docker/issues/20181) [#20235](https://github.com/docker/docker/issues/20235)
**IMPORTANT**: Docker 1.10 uses a new content-addressable storage for images and layers.
A migration is performed the first time docker is run, and can take a significant amount of time depending on the number of images present.
Refer to this page on the wiki for more information: https://github.com/docker/docker/wiki/Engine-v1.10.0-content-addressability-migration
We also released a cool migration utility that enables you to perform the migration before updating to reduce downtime.
Engine 1.10 migrator can be found on Docker Hub: https://hub.docker.com/r/docker/v1.10-migrator/
### Runtime
+ New `docker update` command that allows updating resource constraints on running containers [#15078](https://github.com/docker/docker/pull/15078)
+ Add `--tmpfs` flag to `docker run` to create a tmpfs mount in a container [#13587](https://github.com/docker/docker/pull/13587)
+ Add `--format` flag to `docker images` command [#17692](https://github.com/docker/docker/pull/17692)
+ Allow to set daemon configuration in a file and hot-reload it with the `SIGHUP` signal [#18587](https://github.com/docker/docker/pull/18587)
+ Updated docker events to include more meta-data and event types [#18888](https://github.com/docker/docker/pull/18888)
This change is backward compatible in the API, but not on the CLI.
+ Add `--blkio-weight-device` flag to `docker run` [#13959](https://github.com/docker/docker/pull/13959)
+ Add `--device-read-bps` and `--device-write-bps` flags to `docker run` [#14466](https://github.com/docker/docker/pull/14466)
+ Add `--device-read-iops` and `--device-write-iops` flags to `docker run` [#15879](https://github.com/docker/docker/pull/15879)
+ Add `--oom-score-adj` flag to `docker run` [#16277](https://github.com/docker/docker/pull/16277)
+ Add `--detach-keys` flag to `attach`, `run`, `start` and `exec` commands to override the default key sequence that detaches from a container [#15666](https://github.com/docker/docker/pull/15666)
+ Add `--shm-size` flag to `run`, `create` and `build` to set the size of `/dev/shm` [#16168](https://github.com/docker/docker/pull/16168)
+ Show the number of running, stopped, and paused containers in `docker info` [#19249](https://github.com/docker/docker/pull/19249)
+ Show the `OSType` and `Architecture` in `docker info` [#17478](https://github.com/docker/docker/pull/17478)
+ Add `--cgroup-parent` flag on `daemon` to set cgroup parent for all containers [#19062](https://github.com/docker/docker/pull/19062)
+ Add `-L` flag to docker cp to follow symlinks [#16613](https://github.com/docker/docker/pull/16613)
+ New `status=dead` filter for `docker ps` [#17908](https://github.com/docker/docker/pull/17908)
* Change `docker run` exit codes to distinguish between runtime and application errors [#14012](https://github.com/docker/docker/pull/14012)
* Enhance `docker events --since` and `--until` to support nanoseconds and timezones [#17495](https://github.com/docker/docker/pull/17495)
* Add `--all`/`-a` flag to `stats` to include both running and stopped containers [#16742](https://github.com/docker/docker/pull/16742)
* Change the default cgroup-driver to `cgroupfs` [#17704](https://github.com/docker/docker/pull/17704)
* Emit a "tag" event when tagging an image with `build -t` [#17115](https://github.com/docker/docker/pull/17115)
* Best effort for linked containers' start order when starting the daemon [#18208](https://github.com/docker/docker/pull/18208)
* Add ability to add multiple tags on `build` [#15780](https://github.com/docker/docker/pull/15780)
* Permit `OPTIONS` request against any url, thus fixing issue with CORS [#19569](https://github.com/docker/docker/pull/19569)
- Fix the `--quiet` flag on `docker build` to actually be quiet [#17428](https://github.com/docker/docker/pull/17428)
- Fix `docker images --filter dangling=false` to now show all non-dangling images [#19326](https://github.com/docker/docker/pull/19326)
- Fix race condition causing autorestart turning off on restart [#17629](https://github.com/docker/docker/pull/17629)
- Fix obscure bug preventing to start containers [#19751](https://github.com/docker/docker/pull/19751)
- Forbid `exec` during container restart [#19722](https://github.com/docker/docker/pull/19722)
- devicemapper: Increasing `--storage-opt dm.basesize` will now increase the base device size on daemon restart [#19123](https://github.com/docker/docker/pull/19123)
### Security
+ Add `--userns-remap` flag to `daemon` to support user namespaces (previously in experimental) [#19187](https://github.com/docker/docker/pull/19187)
+ Add support for custom seccomp profiles in `--security-opt` [#17989](https://github.com/docker/docker/pull/17989)
+ Add `--authorization-plugin` flag to `daemon` to customize ACLs [#15365](https://github.com/docker/docker/pull/15365)
+ Docker Content Trust now supports the ability to read and write user delegations [#18887](https://github.com/docker/docker/pull/18887)
This is an optional, opt-in feature that requires the explicit use of the Notary command-line utility in order to be enabled.
Enabling delegation support in a specific repository will break the ability of Docker 1.9 and 1.8 to pull from that repository, if content trust is enabled.
* Allow SELinux to run in a container when using the BTRFS storage driver [#16452](https://github.com/docker/docker/pull/16452)
### Distribution
* Use content-addressable storage for images and layers [#17924](https://github.com/docker/docker/pull/17924)
Note that a migration is performed the first time docker is run; it can take a significant amount of time depending on the number of images and containers present.
Images no longer depend on the parent chain but contain a list of layer references.
`docker load`/`docker save` tarballs now also contain content-addressable image configurations.
For more information: https://github.com/docker/docker/wiki/Engine-v1.10.0-content-addressability-migration
* Add support for the new [manifest format ("schema2")](https://github.com/docker/distribution/blob/master/docs/spec/manifest-v2-2.md) [#18785](https://github.com/docker/docker/pull/18785)
* Lots of improvements for push and pull: performance++, retries on failed downloads, cancelling on client disconnect [#18353](https://github.com/docker/docker/pull/18353), [#18418](https://github.com/docker/docker/pull/18418), [#19109](https://github.com/docker/docker/pull/19109), [#18353](https://github.com/docker/docker/pull/18353)
- Fix issue where docker could hang indefinitely waiting for a nonexistent process to pull an image [#19743](https://github.com/docker/docker/pull/19743)
### Networking
+ Use DNS-based discovery instead of `/etc/hosts` [#19198](https://github.com/docker/docker/pull/19198)
+ Support for network-scoped alias using `--net-alias` on `run` and `--alias` on `network connect` [#19242](https://github.com/docker/docker/pull/19242)
+ Add `--ip` and `--ip6` on `run` and `network connect` to support custom IP addresses for a container in a network [#19001](https://github.com/docker/docker/pull/19001)
+ Add `--ipam-opt` to `network create` for passing custom IPAM options [#17316](https://github.com/docker/docker/pull/17316)
+ Add `--internal` flag to `network create` to restrict external access to and from the network [#19276](https://github.com/docker/docker/pull/19276)
+ Add `kv.path` option to `--cluster-store-opt` [#19167](https://github.com/docker/docker/pull/19167)
+ Add `discovery.heartbeat` and `discovery.ttl` options to `--cluster-store-opt` to configure discovery TTL and heartbeat timer [#18204](https://github.com/docker/docker/pull/18204)
+ Add `--format` flag to `network inspect` [#17481](https://github.com/docker/docker/pull/17481)
+ Add `--link` to `network connect` to provide a container-local alias [#19229](https://github.com/docker/docker/pull/19229)
+ Support for Capability exchange with remote IPAM plugins [#18775](https://github.com/docker/docker/pull/18775)
+ Add `--force` to `network disconnect` to force container to be disconnected from network [#19317](https://github.com/docker/docker/pull/19317)
* Support for multi-host networking using built-in overlay driver for all engine supported kernels: 3.10+ [#18775](https://github.com/docker/docker/pull/18775)
*`--link` is now supported on `docker run` for containers in user-defined network [#19229](https://github.com/docker/docker/pull/19229)
* Include container names in `network inspect` [#17615](https://github.com/docker/docker/pull/17615)
* Include auto-generated subnets for user-defined networks in `network inspect` [#17316](https://github.com/docker/docker/pull/17316)
* Add `--filter` flag to `network ls` to hide predefined networks [#17782](https://github.com/docker/docker/pull/17782)
* Add support for network connect/disconnect to stopped containers [#18906](https://github.com/docker/docker/pull/18906)
* Add network ID to container inspect [#19323](https://github.com/docker/docker/pull/19323)
- Fix MTU issue where Docker would not start with two or more default routes [#18108](https://github.com/docker/docker/pull/18108)
- Fix duplicate IP address for containers [#18106](https://github.com/docker/docker/pull/18106)
- Fix issue preventing sometimes docker from creating the bridge network [#19338](https://github.com/docker/docker/pull/19338)
- Do not substitute 127.0.0.1 name server when using `--net=host` [#19573](https://github.com/docker/docker/pull/19573)
### Logging
+ New logging driver for Splunk [#16488](https://github.com/docker/docker/pull/16488)
+ Add support for syslog over TCP+TLS [#18998](https://github.com/docker/docker/pull/18998)
* Enhance `docker logs --since` and `--until` to support nanoseconds and time [#17495](https://github.com/docker/docker/pull/17495)
* Enhance AWS logs to auto-detect region [#16640](https://github.com/docker/docker/pull/16640)
### Volumes
+ Add support to set the mount propagation mode for a volume [#17034](https://github.com/docker/docker/pull/17034)
* Add `ls` and `inspect` endpoints to volume plugin API [#16534](https://github.com/docker/docker/pull/16534)
Existing plugins need to make use of these new APIs to satisfy users' expectation
For that, please use the new MIME type `application/vnd.docker.plugins.v1.2+json` [#19549](https://github.com/docker/docker/pull/19549)
- Fix data not being copied to named volumes [#19175](https://github.com/docker/docker/pull/19175)
- Fix issues preventing volume drivers from being containerized [#19500](https://github.com/docker/docker/pull/19500)
- Fix `docker volumes ls --dangling=false` to now show all non-dangling volumes [#19671](https://github.com/docker/docker/pull/19671)
- Do not remove named volumes on container removal [#19568](https://github.com/docker/docker/pull/19568)
- Allow external volume drivers to host anonymous volumes [#19190](https://github.com/docker/docker/pull/19190)
### Builder
+ Add support for `**` in `.dockerignore` to wildcard multiple levels of directories [#17090](https://github.com/docker/docker/pull/17090)
- Fix handling of UTF-8 characters in Dockerfiles [#17055](https://github.com/docker/docker/pull/17055)
- Fix permissions problem when reading from STDIN [#19283](https://github.com/docker/docker/pull/19283)
### Client
+ Add support for overriding the API version to use via an `DOCKER_API_VERSION` environment-variable [#15964](https://github.com/docker/docker/pull/15964)
- Fix a bug preventing Windows clients to log in to Docker Hub [#19891](https://github.com/docker/docker/pull/19891)
### Misc
* systemd: Set TasksMax in addition to LimitNPROC in systemd service file [#19391](https://github.com/docker/docker/pull/19391)
### Deprecations
* Remove LXC support. The LXC driver was deprecated in Docker 1.8, and has now been removed [#17700](https://github.com/docker/docker/pull/17700)
* Remove `--exec-driver` daemon flag, because it is no longer in use [#17700](https://github.com/docker/docker/pull/17700)
* Remove old deprecated single-dashed long CLI flags (such as `-rm`; use `--rm` instead) [#17724](https://github.com/docker/docker/pull/17724)
* Deprecate HostConfig at API container start [#17799](https://github.com/docker/docker/pull/17799)
* Deprecate docker packages for newly EOL'd Linux distributions: Fedora 21 and Ubuntu 15.04 (Vivid) [#18794](https://github.com/docker/docker/pull/18794), [#18809](https://github.com/docker/docker/pull/18809)
* Deprecate `-f` flag for docker tag [#18350](https://github.com/docker/docker/pull/18350)
+ Dockerfile to use for a given `docker build` can be specified with the `-f` flag
* Dockerfile and .dockerignore files can be themselves excluded as part of the .dockerignore file, thus preventing modifications to these files invalidating ADD or COPY instructions cache
* ADD and COPY instructions accept relative paths
* Dockerfile `FROM scratch` instruction is now interpreted as a no-base specifier
* Improve performance when exposing a large number of ports
#### Hack
+ Allow client-side only integration tests for Windows
* Include docker-py integration tests against Docker daemon as part of our test suites
#### Packaging
+ Support for the new version of the registry HTTP API
* Speed up `docker push` for images with a majority of already existing layers
- Fixed contacting a private registry through a proxy
#### Remote API
+ A new endpoint will stream live container resource metrics and can be accessed with the `docker stats` command
+ Containers can be renamed using the new `rename` endpoint and the associated `docker rename` command
* Container `inspect` endpoint show the ID of `exec` commands running in this container
* Container `inspect` endpoint show the number of times Docker auto-restarted the container
* New types of event can be streamed by the `events` endpoint: ‘OOM’ (container died with out of memory), ‘exec_create’, and ‘exec_start'
- Fixed returned string fields which hold numeric characters incorrectly omitting surrounding double quotes
#### Runtime
+ Docker daemon has full IPv6 support
+ The `docker run` command can take the `--pid=host` flag to use the host PID namespace, which makes it possible for example to debug host processes using containerized debugging tools
+ The `docker run` command can take the `--read-only` flag to make the container’s root filesystem mounted as readonly, which can be used in combination with volumes to force a container’s processes to only write to locations that will be persisted
* New `COPY` Dockerfile instruction to allow copying a local file from the context into the container without ever extracting if the file is a tar file
* Inherit file permissions from the host on `ADD`
* New `pause` and `unpause` commands to allow pausing and unpausing of containers using cgroup freezer
* The `images` command has a `-f`/`--filter` option to filter the list of images
* Add `--force-rm` to clean up after a failed build
* Standardize JSON keys in Remote API to CamelCase
* Pull from a docker run now assumes `latest` tag if not specified
* Enhance security on Linux capabilities and device nodes
+ Generate md5 and sha256 hashes when building, and upload them via hack/release.sh.
- Include contributed completions in Ubuntu PPA.
+ Add cli integration tests.
* Add tweaks to the hack scripts to make them simpler.
#### Remote API
+ Add TLS auth support for API.
* Move git clone from daemon to client.
- Fix content-type detection in docker cp.
* Split API into 2 go packages.
#### Runtime
* Support hairpin NAT without going through Docker server.
- devicemapper: succeed immediately when removing non-existing devices.
- devicemapper: improve handling of devicemapper devices (add per device lock, increase sleep time and unlock while sleeping).
- devicemapper: increase timeout in waitClose to 10 seconds.
- devicemapper: ensure we shut down thin pool cleanly.
- devicemapper: pass info, rather than hash to activateDeviceIfNeeded, deactivateDevice, setInitialized, deleteDevice.
- devicemapper: avoid AB-BA deadlock.
- devicemapper: make shutdown better/faster.
- improve alpha sorting in mflag.
- Remove manual http cookie management because the cookiejar is being used.
- Use BSD raw mode on Darwin. Fixes nano, tmux and others.
- Add FreeBSD support for the client.
- Merge auth package into registry.
- Add deprecation warning for -t on `docker pull`.
- Remove goroutine leak on error.
- Update parseLxcInfo to comply with new lxc1.0 format.
- Fix attach exit on darwin.
- Improve deprecation message.
- Retry to retrieve the layer metadata up to 5 times for `docker pull`.
- Only unshare the mount namespace for execin.
- Merge existing config when committing.
- Disable daemon startup timeout.
- Fix issue #4681: add loopback interface when networking is disabled.
- Add failing test case for issue #4681.
- Send SIGTERM to child, instead of SIGKILL.
- Show the driver and the kernel version in `docker info` even when not in debug mode.
- Always symlink /dev/ptmx for libcontainer. This fixes console related problems.
- Fix issue caused by the absence of /etc/apparmor.d.
- Don't leave empty cidFile behind when failing to create the container.
- Mount cgroups automatically if they're not mounted already.
- Use mock for search tests.
- Update to double-dash everywhere.
- Move .dockerenv parsing to lxc driver.
- Move all bind-mounts in the container inside the namespace.
- Don't use separate bind mount for container.
- Always symlink /dev/ptmx for libcontainer.
- Don't kill by pid for other drivers.
- Add initial logging to libcontainer.
* Sort by port in `docker ps`.
- Move networking drivers into runtime top level package.
+ Add --no-prune to `docker rmi`.
+ Add time since exit in `docker ps`.
- graphdriver: add build tags.
- Prevent allocation of previously allocated ports & prevent improve port allocation.
* Add support for --since/--before in `docker ps`.
- Clean up container stop.
+ Add support for configurable dns search domains.
- Add support for relative WORKDIR instructions.
- Add --output flag for docker save.
- Remove duplication of DNS entries in config merging.
- Add cpuset.cpus to cgroups and native driver options.
- Remove docker-ci.
- Promote btrfs. btrfs is no longer considered experimental.
- Add --input flag to `docker load`.
- Return error when existing bridge doesn't match IP address.
- Strip comments before parsing line continuations to avoid interpreting instructions as comments.
- Fix TestOnlyLoopbackExistsWhenUsingDisableNetworkOption to ignore "DOWN" interfaces.
- Add systemd implementation of cgroups and make containers show up as systemd units.
- Fix commit and import when no repository is specified.
- Remount /var/lib/docker as --private to fix scaling issue.
- Use the environment's proxy when pinging the remote registry.
- Reduce error level from harmless errors.
* Allow --volumes-from to be individual files.
- Fix expanding buffer in StdCopy.
- Set error regardless of attach or stdin. This fixes #3364.
- Add support for --env-file to load environment variables from files.
- Symlink /etc/mtab and /proc/mounts.
- Allow pushing a single tag.
- Shut down containers cleanly at shutdown and wait forever for the containers to shut down. This makes container shutdown on daemon shutdown work properly via SIGTERM.
- Don't throw error when starting an already running container.
- Fix dynamic port allocation limit.
- remove setupDev from libcontainer.
- Add API version to `docker version`.
- Return correct exit code when receiving signal and make SIGQUIT quit without cleanup.
- Fix --volumes-from mount failure.
- Allow non-privileged containers to create device nodes.
- Skip login tests because of external dependency on a hosted service.
- Deprecate `docker images --tree` and `docker images --viz`.
- Deprecate `docker insert`.
- Include base abstraction for apparmor. This fixes some apparmor related problems on Ubuntu 14.04.
- Add specific error message when hitting 401 over HTTP on push.
- Fix absolute volume check.
- Remove volumes-from from the config.
- Move DNS options to hostconfig.
- Update the apparmor profile for libcontainer.
- Add deprecation notice for `docker commit -run`.
- Fix the use of custom settings for bridges and custom bridges
- Refactor the devicemapper code to avoid many mount/unmount race conditions and failures
- Remove two panics which could make Docker crash in some situations
- Don't ping registry from the CLI client
- Enable skip_block_zeroing for devicemapper. This stops devicemapper from always zeroing entire blocks
- Fix --run in `docker commit`. This makes docker commit store `--run` in the image configuration
- Remove directory when removing devicemapper device. This cleans up leftover mount directories
- Drop NET_ADMIN capability for non-privileged containers. Unprivileged containers can't change their network configuration
- Ensure `docker cp` stream is closed properly
- Avoid extra mount/unmount during container registration. This removes an unneeded mount/unmount operation which was causing problems with devicemapper
- Stop allowing tcp:// as a default tcp bin address which binds to 127.0.0.1:4243 and remove the default port
+ Mount-bind the PTY as container console. This allows tmux and screen to run in a container
- Clean up archive closing. This fixes and improves archive handling
- Fix engine tests on systems where temp directories are symlinked
- Add test methods for save and load
- Avoid temporarily unmounting the container when restarting it. This fixes a race for devicemapper during restart
- Support submodules when building from a GitHub repository
- Quote volume path to allow spaces
- Fix remote tar ADD behavior. This fixes a regression which was causing Docker to extract tarballs
* Images and containers can be removed much faster
* Building an image from source with docker build is now much faster
* The Docker daemon starts and stops much faster
* The memory footprint of many common operations has been reduced, by streaming files instead of buffering them in memory, fixing memory leaks, and fixing various suboptimal memory allocations
* Several race conditions were fixed, making Docker more stable under very high concurrency load. This makes Docker more stable and less likely to crash and reduces the memory footprint of many common operations
* All packaging operations are now built on the Go language’s standard tar implementation, which is bundled with Docker itself. This makes packaging more portable across host distributions, and solves several issues caused by quirks and incompatibilities between different distributions of tar
* Docker can now create, remove and modify larger numbers of containers and images graciously thanks to more aggressive releasing of system resources. For example the storage driver API now allows Docker to do reference counting on mounts created by the drivers
With the ongoing changes to the networking and execution subsystems of docker testing these areas have been a focus of the refactoring. By moving these subsystems into separate packages we can test, analyze, and monitor coverage and quality of these packages
* Many components have been separated into smaller sub-packages, each with a dedicated test suite. As a result the code is better-tested, more readable and easier to change
* The ADD instruction now supports caching, which avoids unnecessarily re-uploading the same source content again and again when it hasn’t changed
* The new ONBUILD instruction adds to your image a “trigger” instruction to be executed at a later time, when the image is used as the base for another build
* Docker now ships with an experimental storage driver which uses the BTRFS filesystem for copy-on-write
+ Update ADD to use the image cache, based on a hash of the added content
* Add error message for empty Dockerfile
#### Documentation
- Fix outdated link to the "Introduction" on www.docker.io
+ Update the docs to get wider when the screen does
- Add information about needing to install LXC when using raw binaries
* Update Fedora documentation to disentangle the docker and docker.io conflict
* Add a note about using the new `-mtu` flag in several GCE zones
+ Add FrugalWare installation instructions
+ Add a more complete example of `docker run`
- Fix API documentation for creating and starting Privileged containers
- Add missing "name" parameter documentation on "/containers/create"
* Add a mention of `lxc-checkconfig` as a way to check for some of the necessary kernel configuration
- Update the 1.8 API documentation with some additions that were added to the docs for 1.7
#### Hack
- Add missing libdevmapper dependency to the packagers documentation
* Update minimum Go requirement to a hard line at Go 1.2+
* Many minor improvements to the Vagrantfile
+ Add ability to customize dockerinit search locations when compiling (to be used very sparingly only by packagers of platforms who require a nonstandard location)
+ Add coverprofile generation reporting
- Add `-a` to our Go build flags, removing the need for recompiling the stdlib manually
* Update Dockerfile to be more canonical and have less spurious warnings during build
- Fix some miscellaneous `docker pull` progress bar display issues
* Migrate more miscellaneous packages under the "pkg" folder
* Update TextMate highlighting to automatically be enabled for files named "Dockerfile"
* Reorganize syntax highlighting files under a common "contrib/syntax" directory
* Update install.sh script (https://get.docker.io/) to not fail if busybox fails to download or run at the end of the Ubuntu/Debian installation
* Add support for container names in bash completion
#### Packaging
+ Add an official Docker client binary for Darwin (Mac OS X)
* Remove empty "Vendor" string and added "License" on deb package
+ Add a stubbed version of "/etc/default/docker" in the deb package
#### Runtime
* Update layer application to extract tars in place, avoiding file churn while handling whiteouts
- Fix permissiveness of mtime comparisons in tar handling (since GNU tar and Go tar do not yet support sub-second mtime precision)
* Reimplement `docker top` in pure Go to work more consistently, and even inside Docker-in-Docker (thus removing the shell injection vulnerability present in some versions of `lxc-ps`)
+ Update `-H unix://` to work similarly to `-H tcp://` by inserting the default values for missing portions
- Fix more edge cases regarding dockerinit and deleted or replaced docker or dockerinit files
* Update container name validation to include '.'
- Fix use of a symlink or non-absolute path as the argument to `-g` to work as expected
* Update to handle external mounts outside of LXC, fixing many small mounting quirks and making future execution backends and other features simpler
* Update to use proper box-drawing characters everywhere in `docker images -tree`
* Move MTU setting from LXC configuration to directly use netlink
* Add `-S` option to external tar invocation for more efficient spare file handling
+ Add arch/os info to User-Agent string, especially for registry requests
+ Add `-mtu` option to Docker daemon for configuring MTU
- Fix `docker build` to exit with a non-zero exit code on error
+ Add `DOCKER_HOST` environment variable to configure the client `-H` flag without specifying it manually for every invocation
+ Builder: New build operation ENTRYPOINT adds an executable entry point to the container. - Runtime: Fix a bug which caused 'docker run -d' to no longer print the container ID.
