- Upgrade to Docker 1.12.3

### Beta 29.1 Release Notes (2016-10-26 1.12.1-beta29.1)

**Hotfixes**

- Fixed missing `/dev/pty/ptmx`

### Beta 29 Release Notes (2016-10-25 1.12.3-rc1-beta29)

Windows Container support relies on the Windows 10 container feature, which is
**experimental** at this point.  Windows 10 Pro (1607, build number 14393)
requires update `KB3192366` (soon to be released through Windows Update) to fully
work. Some insider builds may not work.

**New**

- Restore the virtual machine's configuration when it was changed by the user
- Overlay2 is now the default storage driver. After a factory reset overlay2 is automatically used
- Detect firewall configuration that might block the file sharing
- Send more GUI usage statistics to help us improve the product

**Upgrades**

- Docker 1.12.3-rc1
- Linux Kernel 4.4.27

**Bug fixes and minor changes**

- Faster mount/unmount of shared drives
- Added a timeout to mounting/unmounting a shared drive
- Added the settings to the diagnostics
- Increase default ulimit for memlock (fixes https://github.com/docker/for-mac/issues/801)
- Make sure we don't use an older Nlog library from the GAC


### Beta 28 Release Notes (2016-10-13 1.12.2-rc3-beta28)

Windows Container support relies on the Windows 10 container feature, which is
**experimental** at this point.  Windows 10 Pro (1607, build number 14393)
requires update `KB3192366` (soon to be released through Windows Update) to fully
work. Some insider builds may not work.

**New**

- Path to HyperV disks in no longer hardcoded, making the Toolbox import work with non-standard path
- Verify that ALL HyperV features are enabled
- Make it clear why user cannot switch to Windows Containers with a tooltip in the systray
- Added Moby console to the logs
- Save the current engine with the other settings
- Notary version 0.4.2 installed


**Upgrades**

- Docker 1.12.2
- Kernel 4.4.24

**Bug fixes and minor changes**

- Fixed a password escaping regression
- Support writing large values to the database, especially for trusted CAs
- VPNKit is now restarted if it dies
- Make sure invalid "DockerNat" switches are not used
- Preserve the PowerShell stacktraces
- Write OS and Application versions at the top of each log file

### Beta 27 Release Notes (2016-09-28 1.12.2-rc1-beta27)

**New**

* Reworked the File Sharing dialog and underlying mechanism
* Pre-fill username
* Faster and more reliable feedback when the user/password is not valid
* Better support for domain users
* Error message in Logs when File Sharing failed for other reasons

**Upgrades**

* Docker 1.12.2-rc1
* Docker Machine 0.8.2
* Docker Compose 1.8.1
* Kernel 4.4.21
* AUFS 20160912

**Bug fixes and minor changes**

* Improve the switching between Linux and Windows containers: better errors, more reliable, deal with more edge cases
* Kill lingering dockerd that users might have still around because they played with Windows Containers before
* Don't recreate the virtual machine if only the DNS server is set
* The uninstaller now kills the service if it failed to stop it properly
* Restart VPNKit and DataKit when the processes die
* VPNKit: impose a connection limit to avoid exhausting file descriptors
* VPNKit: handle UDP datagrams larger than 2035 bytes
* VPNKit: reduce the number of file descriptors consumed by DNS
* Improve debug information

### Beta 26 Release Notes (2016-09-14 1.12.1-beta26)

**New**

* Basic support for Windows containers. On Windows 10 build >= 14372, a switch in the `systray` icon changes which daemon (Linux or Windows) the Docker CLI talks to

* To support trusted registry transparently, all trusted CAs (root or intermediate) on the Windows host are automatically copied to Moby

* `Reset Credentials` also unshares the shared drives

* Logs are now rotated every day

**Upgrades**

* Linux kernel 4.4.20
* AUFS 20160905

**Bug fixes and minor changes**

* We no longer send the same DNS settings twice to the daemon

* Fixed the lingering net adapters removal on Windows 10 Anniversary Update