Docker 1.7.0 正式版发布，此版本主要更新信息如下：
Runtime：
Experimental feature: support for out-of-process volume plugins
The userland proxy can be disabled in favor of hairpin NAT using the daemon’s --userland-proxy=false flag
The exec command supports the -u|--user flag to specify the new process owner
Default gateway for containers can be specified daemon-wide using the --default-gateway and --default-gateway-v6 flags
The CPU CFS (Completely Fair Scheduler) quota can be set in docker run using --cpu-quota
Container block IO can be controlled in docker run using--blkio-weight
ZFS support
The docker logs command supports a --since argument
UTS namespace can be shared with the host with docker run --uts=host
Quality：
Networking stack was entirely rewritten as part of the libnetwork effort
Engine internals refactoring
Volumes code was entirely rewritten to support the plugins effort
Sending SIGUSR1 to a daemon will dump all goroutines stacks without exiting
Build
Support ${variable:-value} and ${variable:+value} syntax for environment variables
Support resource management flags --cgroup-parent, --cpu-period, --cpu-quota, --cpuset-cpus, --cpuset-mems
git context changes with branches and directories
The .dockerignore file support exclusion rules
Distribution
Client support for v2 mirroring support for the official registry
Bugfixes
Firewalld is now supported and will automatically be used when available
mounting --device recursively
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。
软件详情：https://github.com/docker/docker/blob/master/CHANGELOG.md
下载地址：https://github.com/docker/docker/archive/v1.7.0.tar.gz
来自:开源中国社区
