Docker 1.9.0 RC4 发布，Linux 容器引擎

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　　Docker 1.9.0 RC4 发布，包含众多改进内容：
Runtime

• 　　docker stats now returns block IO metrics (#15005)
  
• 　　docker stats now details network stats per interface (#15786)
  
• 　　Add ancestor= filter to docker ps --filter flag to filter containers based on their ancestor images (#14570)
  
• 　　Add label= filter to docker ps --filter to filter containers based on label (#16530)
  
• 　　Add --kernel-memory flag to docker run (#14006)
  
• 　　Add --message flag to docker import allowing to specify an optional message (#15711)
  
• 　　Add --privileged flag to docker exec (#14113)
  
• 　　Add --stop-signal flag to docker run allowing to replace the container process stopping signal (#15307)
  
• 　　Add a new unless-stopped restart policy (#15348)
  
• 　　Inspecting an image now returns tags (#13185)
  
• 　　Add container>docker inspect (#15796)
  
• 　　Add RepoTags and RepoDigests field to /images/{name:.*}/json (#17275)
  
• 　　Remove the deprecated /container/ps endpoint from the API (#15972)
  
• 　　Send and document correct HTTP codes for /exec//start (#16250)
  
• 　　Share shm and mqueue between containers sharing IPC namespace (#15862)
  
• 　　Event stream now shows OOM status when --oom-kill-disable is set (#16235)
  
• 　　Ensure special network files (/etc/hosts etc.) are read-only if bind-mounted with ro option (#14965)
  
• 　　Improve rmi performance (#16890)
  
• 　　Do not update /etc/hosts for the default bridge network, except for links (#17325)
  
• 　　Fix conflict with duplicate container names (#17389)
  
• 　　Fix an issue with incorrect template execution in docker inspect (#17284)
  
• 　　DEPRECATE -c short flag variant for --cpu-shares in docker run (#16271)
  

Client

• 　　Allow docker import to import from local files (#11907)
  

Builder

• 　　Add a STOPSIGNAL Dockerfile instruction allowing to set a different stop-signal for the container process (#15307)
  
• 　　Add an ARG Dockerfile instruction and a --build-arg flag to docker build that allows to add build-time environment variables (#15182)
  
• 　　Improve cache miss performance (#16890)
  

Storage

• 　　devicemapper: Implement deferred deletion capability (#16381)
  

Networking

• 
  　　docker network exits experimental and is part of standard>
  
• 　　New network top-level concept, with associated subcommands and API (#16645)
  
• 　　Support for multiple isolated/micro-segmented networks (#16645)
  
• 　　Built-in multihost networking using VXLAN based overlay driver (#14071)
  
• 　　Support for third-party network plugins (#13424)
  
• 　　Ability to dynamically connect containers to multiple networks (#16645)
  
• 　　Support for user-defined IP address management via pluggable IPAM drivers (#16910)
  
• 　　Add daemon flags --cluster-store and --cluster-advertise for built-in nodes discovery (#16229)
  
• 　　Add --cluster-store-opt for setting up TLS settings (#16644)
  
• 　　Add --dns-opt to the daemon (#16031)
  
• 　　DEPRECATE following container NetworkSettings fields in API v1.21: EndpointID, Gateway,GlobalIPv6Address, GlobalIPv6PrefixLen, IPAddress, IPPrefixLen, IPv6Gateway and MacAddress.Those are now specific to the bridge network. Use NetworkSettings.Networks to inspectthe networking settings of a container per network.
  

Volumes

• 　　New top-level volume subcommand and API (#14242)
  
• 　　Move API volume driver settings to host-specific config (#15798)
  
• 　　Print an error message if volume name is not unique (#16009)
  
• 　　Ensure volumes created from Dockerfiles always use the local volume driver (#15507)
  
• 　　DEPRECATE auto-creating missing host paths for bind mounts (#16349)
  

Logging

• 　　Add awslogs logging driver for Amazon CloudWatch (#15495)
  
• 　　Add generic tag log option to allow customizing container/image information passed to driver (e.g. show container names) (#15384)
  
• 　　Implement the docker logs endpoint for the journald driver (#13707)
  
• 　　DEPRECATE driver-specific log tags (e.g. syslog-tag, etc.) (#15384)
  

Distribution

• 　　docker search now works with partial names (#16509)
  
• 　　Push optimization: avoid buffering to file (#15493)
  
• 　　The daemon will display progress for images that were already being pulled by another client (#15489)
  
• 　　Only permissions required for the current action being performed are requested (#)
  
• 　　Renaming trust keys (and respective environment variables) from offline to root and tagging to repository (#16894)
  
• 　　DEPRECATE trust key environment variables DOCKER_CONTENT_TRUST_OFFLINE_PASSPHRASE and DOCKER_CONTENT_TRUST_TAGGING_PASSPHRASE (#16894)
  

Security

• 　　Add SELinux profiles to the rpm package (#15832)
  
• 　　Fix various issues with AppArmor profiles provided in the deb package(#14609)
  
• 　　Add AppArmor policy that prevents writing to /proc (#15571)
  

下载地址：
　　Ubuntu/Debian: curl -sSL https://test.docker.com/ | sh
　　Linux 64bit binary: https://test.docker.com/builds/Linux/x86_64/docker-1.9.0-rc4
　　Darwin/OSX 64bit client binary: https://test.docker.com/builds/Darwin/x86_64/docker-1.9.0-rc4
　　Darwin/OSX 32bit client binary: https://test.docker.com/builds/Darwin/i386/docker-1.9.0-rc4
　　Linux 64bit tgz: https://test.docker.com/builds/Linux/x86_64/docker-1.9.0-rc4.tgz
　　Windows 64bit client binary: https://test.docker.com/builds/Windows/x86_64/docker-1.9.0-rc4.exe
　　Windows 32bit client binary: https://test.docker.com/builds/Windows/i386/docker-1.9.0-rc4.exe