Docker 1.5.0-rc2 发布，谢谢大家对 Docker 1.5.0-rc1 的测试和反馈。
这里除了 1.5.0-rc1 提到的改进内容，还包括以下这些重要的特性：
GitHub 加上了 Tag v1.5.0-rc2 (commit id a393450)
正式版发布日期仍然是 2 月 3 日，包括 Compose 1.1.0，Machine beta 0.1.0 和 Swarm beta 0.1.0
提供相关文档，方便大家测试：https://gist.github.com/dmp42/4eb84f9fe19f7b8808c0
下载：
boot2docker：https://github.com/tianon/boot2docker/releases/tag/v1.5.0-rc2
ISO：https://github.com/tianon/boot2docker/releases/download/v1.5.0-rc2/boot2docker.iso
二进制包下载：
Ubuntu/Debian: https://test.docker.com/ubuntu or curl -sSL https://test.docker.com/ | sh
Linux 64bit binary: https://test.docker.com/builds/Linux/x86_64/docker-1.5.0-rc2
Darwin/OSX 64bit client binary: https://test.docker.com/builds/Darwin/x86_64/docker-1.5.0-rc2
Darwin/OSX 32bit client binary: https://test.docker.com/builds/Darwin/i386/docker-1.5.0-rc2
Linux 64bit tgz: https://test.docker.com/builds/Linux/x86_64/docker-1.5.0-rc2.tgz
更新日志：
Builder
+ Dockerfile to use for a given `docker build` can be specified with the `-f` flag
* Dockerfile and .dockerignore files can be themselves excluded as part of the .dockerignore file, thus preventing modifications to these files invalidating ADD or COPY instructions cache
* ADD and COPY instructions accept relative paths
* Dockerfile `FROM scratch` instruction is now interpreted as a no-base specifier
* Improve performance when exposing a large number of ports
Hack
+ Allow client-side only integration tests for Windows
* Include docker-py integration tests against Docker daemon as part of our test suites
Packaging
+ Support for the new version of the registry HTTP API
* Speed up `docker push` for images with a majority of already existing layers
- Fixed contacting a private registry through a proxy
Remote API
+ A new endpoint will stream live container resource metrics and can be accessed with the `docker stats` command
+ Containers can be renamed using the new `rename` endpoint and the associated `docker rename` command
* Container `inspect` endpoint show the ID of `exec` commands running in this container
* Container `inspect` endpoint show the number of times Docker auto-restarted the container
* New types of event can be streamed by the `events` endpoint: ‘OOM’ (container died with out of memory), ‘exec_create’, and ‘exec_start'
- Fixed returned string fields which hold numeric characters incorrectly omitting surrounding double quotes
Runtime
+ Docker daemon has full IPv6 support
+ The `docker run` command can take the `--pid=host` flag to use the host PID namespace, which makes it possible for example to debug host processes using containerized debugging tools
+ The `docker run` command can take the `--read-only` flag to make the container’s root filesystem mounted as readonly, which can be used in combination with volumes to force a container’s processes to only write to locations that will be persisted
+ Container total memory usage can be limited for `docker run` using the `--memory-swap` flag
* Major stability improvements for devicemapper storage driver
* Better integration with host system: containers will reflect changes to the host's `/etc/resolv.conf` file when restarted
* Better integration with host system: per-container iptable rules are moved to the DOCKER chain
- Fixed container exiting on out of memory to return an invalid exit code
Other
* The HTTP_PROXY, HTTPS_PROXY, and NO_PROXY environment variables are properly taken into account by the client when connecting to the Docker daemon
--
Arnaud Porterie
软件详情：https://groups.google.com/forum/#!topic/docker-dev/YM_UUkyM6hY
下载地址：https://github.com/docker/docker/
来自:开源中国社区
