Docker for Mac Updates and Bug Fixes: Versions 1.12.3 and 1.12.1

- Linux Kernel 4.4.27 - Notary 0.4.2 - Docker Machine 0.8.2 - Docker Compose 1.8.1 - Kernel vsock driver v7 - aufs 20160912 **Bug fixes and minor changes** **General** - Fixed an issue where the whale animation during setting change was inconsistent - Fixed an issue where some windows stayed hidden behind another app - Fixed an issue where the Docker status would continue to be yellow/animated after the VM had started correctly - Fixed an issue where Docker for Mac was incorrectly reported as updated - Channel is now displayed in About box - Crash reports are sent over Bugsnag rather than HockeyApp - Fixed an issue where some windows did not claim focus correctly - Added UI when switching channel to prevent user losing containers and settings - Check disk capacity before Toolbox import - Import certificates in `etc/ssl/certs/ca-certificates.crt` - disk: make the "flush" behaviour configurable for database-like workloads. This works around a performance regression in 1.12.1. **Networking** - Proxy: Fixed application of system or custom proxy settings over container restart - DNS: reduce the number of UDP sockets consumed on the host - VPNkit: improve the connection-limiting code to avoid running out of sockets on the host - UDP: handle diagrams bigger than 2035, up to the configured macOS kernel limit - UDP: make the forwarding more robust; drop packets and continue rather than stopping **File sharing** - osxfs: Fixed the prohibition of chown on read-only or mode 0 files, (fixes [docker/for-mac#117](https://github.com/docker/for-mac/issues/117), [docker/for-mac#263](https://github.com/docker/for-mac/issues/263), [docker/for-mac#633](https://github.com/docker/for-mac/issues/633)) - osxfs: Fixed race causing some reads to run forever - osxfs: Fixed a simultaneous volume mount race which can result in a crash **Moby** - Increase default ulimit for memlock (fixes [docker/for-mac#801](https://github.com/docker/for-mac/issues/801)) ### Docker for Mac 1.12.1, 2016-09-16 **New** * Support for macOS 10.12 Sierra **Upgrades** * Docker 1.12.1 * Docker machine 0.8.1 * Linux kernel 4.4.20 * aufs 20160905 **Bug fixes and minor changes** **General** * Fixed communications glitch when UI talks to com.docker.vmnetd Fixes [docker/for-mac#90](https://github.com/docker/for-mac/issues/90) * `docker-diagnose`: display and record the time the diagnosis was captured

This section covers updates and bug fixes for Docker for Mac versions 1.12.3 and 1.12.1. Version 1.12.3 includes upgrades to Linux Kernel, Notary, Docker Machine, Docker Compose, Kernel vsock driver, and aufs. Bug fixes in 1.12.3 address UI inconsistencies, window focus issues, status reporting, incorrect update notifications, and crash reporting. It also includes improvements to proxy settings, DNS resolution, VPNkit connection handling, and UDP packet forwarding. File sharing fixes in osxfs address issues with chown permissions and race conditions. Moby's default ulimit for memlock is increased. Version 1.12.1 introduces support for macOS 10.12 Sierra and includes upgrades to Docker, Docker Machine, Linux kernel, and aufs. Bug fixes in 1.12.1 address communication glitches between the UI and com.docker.vmnetd, and enhance the `docker-diagnose` tool to display and record the time of diagnosis capture.