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Docker 1.8.0 RC1 发布，更丰富的 Dockerfile 语法

Docker 1.8.0 RC1 发布，正式版计划在 8 月 4 日（周二）发布。此版本引入了一些非常棒的 apt & yum repos 。

Docker 1.8.0 将会引入一个新的 API 来复制文件和目录到一个容器中，每个人都可以使用 Docker Remote API 实现他们的构建系统。 Dockramp 是 `docker build` 另一个选择的第一个概念验证。

Dockramp 主要特性：

没有上下文上传
高效分层和缓存
更丰富和扩展性更强的 Dockerfile 语法

下载：

Linux 64bit binary: https://test.docker.com/builds/Linux/x86_64/docker-1.8.0-rc1
Darwin/OSX 64bit client binary: https://test.docker.com/builds/Darwin/x86_64/docker-1.8.0-rc1
Darwin/OSX 32bit client binary: https://test.docker.com/builds/Darwin/i386/docker-1.8.0-rc1
Linux 64bit tgz: https://test.docker.com/builds/Linux/x86_64/docker-1.8.0-rc1.tgz
Windows 64bit client binary: https://test.docker.com/builds/Windows/x86_64/docker-1.8.0-rc1.exe
Windows 32bit client binary: https://test.docker.com/builds/Windows/i386/docker-1.8.0-rc1.exe

更新内容：

## 1.8.0  ### Distribution  + Trusted pull, push and build (disabled by default) * Make tar layers deterministic between registries * Don't allow deleting the image of running containers * Check if a tag name to load is a valid digest * Allow one character repository names * Add a more accurate error description for invalid tag name * Make build cache ignore mtime  ### Cli  + Add support for DOCKER_CONFIG/--config to specify config file dir + Add --type flag  for docker inspect command + Add formatting options to `docker ps` with `--format` + Replace `docker -d` with new subcommand `docker daemon` * Zsh completion updates and improvements * Add some missing events to bash completion * Support daemon urls with base paths in `docker -H` * Validate status= filter to docker ps * Display when a container is in --net=host in docker ps * Extend docker inspect to export image metadata related to graph driver * Restore --default-gateway{,-v6} daemon options * Add missing unpublished ports in docker ps * Allow duration strings in `docker events` as --since/--until * Expose more mounts information in `docker inspect`  ### Runtime  + Add new Fluentd logging driver + Allow `docker import` to load from local files + Add logging driver for GELF via UDP + Allow to copy files from host to containers with `docker cp` + Promote volume drivers from experimental to master + Add rollover log driver, and --log-driver-opts flag + Add memory swappiness tuning options * Remove cgroup read-only flag when privileged * Make /proc, /sys, & /dev readonly for readonly containers * Add cgroup bind mount by default * Overlay: Export metadata for container and image in `docker inspect` * Devicemapper: external device activation * Devicemapper: Compare uuid of base device on startup * Remove RC4 from the list of registry cipher suites * Add syslog-facility option * LXC execdriver compatibility with recent LXC versions  ### Plugins  * Separate plugin sockets and specs locations * Allow TLS connections to plugins  ### Bug fixes  - Add missing 'Names' field to /containers/json API output - Make `docker rmi --dangling` safe when pulling - Devicemapper: Change default basesize to 100G - Go Scheduler issue with sync.Mutex and gcc - Fix issue where Search API endpoint would panic due to empty AuthConfig - Set image canonical names correctly - Check dockerinit only if lxc driver is used - Fix ulimit usage of nproc - Always attach STDIN if -i,--interactive is specified - Show error messages when saving container state fails - Fixed incorrect assumption on --bridge=none treated as disable network - Check for invalid port specifications in host configuration - Fix endpoint leave failure for --net=host mode - Fix goroutine leak in the stats API if the container is not running - Check for apparmor file before reading it - Fix DOCKER_TLS_VERIFY being ignored - Set umask to the default on startup - Correct the message of pause and unpause a non-running container - Adjust disallowed CpuShares in container creation - ZFS: correctly apply selinux context - Display empty string instead of <nil> when IP opt is nil - `docker kill` returns error when container is not running - Fix COPY/ADD quoted/json form - Fix goroutine leak on logs -f with no output - Remove panic in nat package on invalid hostport - Fix container linking in Fedora 22 - Fix error caused using default gateways outside of the allocated range

更多改进内容请看发行说明。

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Docker 逗你玩儿 ： http://www.oschina.net/news/64013/git-osc-docker-image-maker

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