Docker 1.12.3-rc1 发布了，Docker 是一个开源的应用容器引擎，让开发者可以打包他们的应用以及依赖包到一个可移植的容器中，然后发布到任何流行的 Linux 机器上，也可以实现虚拟化。容器是完全使用沙箱机制，相互之间不会有任何接口（类似 iPhone 的 app）。几乎没有性能开销,可以很容易地在机器和数据中心中运行。最重要的是,他们不依赖于任何语言、框架或包装系统。
更新内容：
Runtime
Fix ambient capability usage in containers (CVE-2016-8867) #27610
Prevent a deadlock in libcontainerd for Windows #27136
Fix error reporting in CopyFileWithTar #27075
Reset health status to starting when a container is restarted #27387
Properly handle shared mount propagation in storage directory #27609
Fix docker exec #27610
Fix backward compatibility with containerd’s events log #27693
Swarm Mode
Fix conversion of restart-policy #27062
Update Swarmkit #27554
Avoid restarting a task that has already been restarted docker/swarmkit#1305
Allow duplicate published ports when they use different protocols docker/swarmkit#1632
Allow multiple randomly assigned published ports on service docker/swarmkit#1657
Fix panic when allocations happen at init time docker/swarmkit#1651
Networking
Update libnetwork #27559
Fix race in serializing sandbox to string docker/libnetwork#1495
Fix race during deletion docker/libnetwork#1503
Reset endpoint port info on connectivity revoke in bridge driver docker/libnetwork#1504
Fix a deadlock in networking code docker/libnetwork#1507
Fix a race in load balancer state docker/libnetwork#1512
Logging
Update fluent-logger-golang to v1.2.1 #27474
Contrib
Update buildtags for armhf ubuntu-trusty #27327
Add AppArmor to runc buildtags for armhf #27421
下载地址：https://github.com/docker/docker/archive/v1.12.3-rc1.zip
来自:开源中国社区
