Docker 1.12.2 发布，内置编排机制

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                            　　Docker 1.12.2 发布了。Docker1.12通过swarm实现了容器集群，在集群之上可以service命令创建一个服务，实现服务的多实例。在服务之上，通过stack可以描述一组服务，最终实现一个大系统的部署。本次更新内容如下：
　　Networking

• 　　Fix a daemon start panic on armv5 #24315
  
• 　　Vendor libnetwork #26879 #26953
  
  
  
  • 　　Avoid returning early on agent join failures docker/libnetwork#1473
    
  • 　　Fix service published port cleanup issues docker/libetwork#1432 docker/libnetwork#1433
    
  • 　　Recover properly from transient gossip failures docker/libnetwork#1446
    
  • 　　Disambiguate node names known to gossip cluster to avoid node name collisiondocker/libnetwork#1451
    
  • 　　Honor user provided listen address for gossip docker/libnetwork#1460
    
  • 　　Allow reachability via published port across services on the same host docker/libnetwork#1398
    
  • 　　Change the ingress sandbox name from random>ingress_sboxdocker/libnetwork#1449
    
  
  

　　Swarm Mode

• 　　Fix remote detection of a node's address when it joins the cluster #26211
  
• 　　Vendor SwarmKit #26765
  
  
  
  • 　　Bounce session after failed status update docker/swarmkit#1539
    
  • 　　Fix possible raft deadlocks docker/swarmkit#1537
    
  • 　　Fix panic and endpoint leak when a service is updated with no endpoints docker/swarmkit#1481
    
  • 　　Produce an error if the same port is published twice on service create or service updatedocker/swarmkit#1495
    
  • 　　Fix an issue where changes to a service were not detected, resulting in the service not being updated docker/swarmkit#1497
    
  
  

　　Contrib

• 　　Update the debian sysv-init script to use dockerd instead of docker daemon #25869
  
• 　　Improve stability when running the docker client on MacOS Sierra #26875
  

　　Windows

• 　　Fix an issue where arrow-navigation did not work when running the docker client in ConEmu #25578
  

　　发行说明及下载地址：

• 　　https://github.com/docker/docker/releases/tag/v1.12.2
  
• 　　https://github.com/docker/docker/blob/master/CHANGELOG.md