- Fix bug with `docker inspect` output when not connected to daemon (#17715)
- Fix `docker inspect -f {{.HostConfig.Dns}} somecontainer` (#17680)
### Builder
- Fix regression with symlink behavior in ADD/COPY (#17710)
### Networking
- Allow passing a network ID as an argument for `--net` (#17558)
- Fix connect to host and prevent disconnect from host for `host` network (#17476)
- Fix `--fixed-cidr` issue when gateway ip falls in ip-range and ip-range is
not the first block in the network (#17853)
- Restore deterministic `IPv6` generation from `MAC` address on default `bridge` network (#17890)
- Allow port-mapping only for endpoints created on docker run (#17858)
- Fixed an endpoint delete issue with a possible stale sbox (#18102)
### Distribution
- Correct parent chain in v2 push when v1Compatibility files on the disk are inconsistent (#18047)
## 1.9.0 (2015-11-03)
### Runtime
+ `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)
### Client
+ Allow `docker import` to import from local files (#11907)
### Builder
+ 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)
### Storage
- devicemapper: Implement deferred deletion capability (#16381)
### Networking
+ `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