Items starting with `DEPRECATE` are important deprecation notices. For more

information on the list of deprecated flags and APIs please have a look at

https://docs.docker.com/misc/deprecated/ where target removal dates can also

be found.

+ `docker stats` now returns block IO metrics (#15005)

+ `docker stats` now details network stats per interface (#15786)

+ Add `ancestor=<image>` filter to `docker ps --filter` flag to filter

containers based on their ancestor images (#14570)

+ Add `label=<somelabel>` filter to `docker ps --filter` to filter containers

based on label (#16530)

+ Add `--kernel-memory` flag to `docker run` (#14006)

+ Add `--message` flag to `docker import` allowing to specify an optional

message (#15711)

+ Add `--privileged` flag to `docker exec` (#14113)

+ Add `--stop-signal` flag to `docker run` allowing to replace the container

process stopping signal (#15307)

+ Add a new `unless-stopped` restart policy (#15348)

+ Inspecting an image now returns tags (#13185)

+ Add container size information to `docker inspect` (#15796)

+ Add `RepoTags` and `RepoDigests` field to `/images/{name:.*}/json` (#17275)

- Remove the deprecated `/container/ps` endpoint from the API (#15972)

- Send and document correct HTTP codes for `/exec/<name>/start` (#16250)

- Share shm and mqueue between containers sharing IPC namespace (#15862)

- Event stream now shows OOM status when `--oom-kill-disable` is set (#16235)

- Ensure special network files (/etc/hosts etc.) are read-only if bind-mounted

with `ro` option (#14965)

- Improve `rmi` performance (#16890)

- Do not update /etc/hosts for the default bridge network, except for links (#17325)

- Fix conflict with duplicate container names (#17389)

- Fix an issue with incorrect template execution in `docker inspect` (#17284)

- DEPRECATE `-c` short flag variant for `--cpu-shares` in docker run (#16271)

+ Allow `docker import` to import from local files (#11907)

+ Add a `STOPSIGNAL` Dockerfile instruction allowing to set a different

stop-signal for the container process (#15307)

+ Add an `ARG` Dockerfile instruction and a `--build-arg` flag to `docker build`

that allows to add build-time environment variables (#15182)

- Improve cache miss performance (#16890)

- devicemapper: Implement deferred deletion capability (#16381)

+ `docker network` exits experimental and is part of standard release (#16645)

+ New network top-level concept, with associated subcommands and API (#16645)

WARNING: the API is different from the experimental API

+ Support for multiple isolated/micro-segmented networks (#16645)

+ Built-in multihost networking using VXLAN based overlay driver (#14071)

+ Support for third-party network plugins (#13424)

+ Ability to dynamically connect containers to multiple networks (#16645)

+ Support for user-defined IP address management via pluggable IPAM drivers (#16910)

+ Add daemon flags `--cluster-store` and `--cluster-advertise` for built-in nodes discovery (#16229)

+ Add `--cluster-store-opt` for setting up TLS settings (#16644)

+ Add `--dns-opt` to the daemon (#16031)

- DEPRECATE following container `NetworkSettings` fields in API v1.21: `EndpointID`, `Gateway`,

`GlobalIPv6Address`, `GlobalIPv6PrefixLen`, `IPAddress`, `IPPrefixLen`, `IPv6Gateway` and `MacAddress`.

Those are now specific to the `bridge` network. Use `NetworkSettings.Networks` to inspect

the networking settings of a container per network.

+ New top-level `volume` subcommand and API (#14242)

- Move API volume driver settings to host-specific config (#15798)

- Print an error message if volume name is not unique (#16009)

- Ensure volumes created from Dockerfiles always use the local volume driver

(#15507)

- DEPRECATE auto-creating missing host paths for bind mounts (#16349)

+ Add `awslogs` logging driver for Amazon CloudWatch (#15495)

+ Add generic `tag` log option to allow customizing container/image

information passed to driver (e.g. show container names) (#15384)

- Implement the `docker logs` endpoint for the journald driver (#13707)

- DEPRECATE driver-specific log tags (e.g. `syslog-tag`, etc.) (#15384)

+ `docker search` now works with partial names (#16509)

- Push optimization: avoid buffering to file (#15493)

- The daemon will display progress for images that were already being pulled

by another client (#15489)

- Only permissions required for the current action being performed are requested (#)

+ Renaming trust keys (and respective environment variables) from `offline` to

`root` and `tagging` to `repository` (#16894)

- DEPRECATE trust key environment variables

`DOCKER_CONTENT_TRUST_OFFLINE_PASSPHRASE` and

`DOCKER_CONTENT_TRUST_TAGGING_PASSPHRASE` (#16894)

+ Add SELinux profiles to the rpm package (#15832)

- Fix various issues with AppArmor profiles provided in the deb package

(#14609)

- Add AppArmor policy that prevents writing to /proc (#15571)