jenkins采用docker部署在ubuntu系统里，现在想要通过容器ssh到宿主机。容器内执行ssh，没有任何问题。采用jenkins ssh plugins（2.4）方式就提示不能连接，但是另外一个cenos系统的ssh可以正常工作。
一下是报错信息：

[SSH] Exception:Algorithm negotiation fail
com.jcraft.jsch.JSchException: Algorithm negotiation fail
    at com.jcraft.jsch.Session.receive_kexinit(Session.java:520)
    at com.jcraft.jsch.Session.connect(Session.java:286)
    at com.jcraft.jsch.Session.connect(Session.java:150)
    at org.jvnet.hudson.plugins.SSHSite.createSession(SSHSite.java:141)
    at org.jvnet.hudson.plugins.SSHSite.executeCommand(SSHSite.java:151)
    at org.jvnet.hudson.plugins.SSHBuilder.perform(SSHBuilder.java:60)
    at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20)
    at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:779)
    at hudson.maven.MavenModuleSetBuild$MavenModuleSetBuildExecution.build(MavenModuleSetBuild.java:939)
    at hudson.maven.MavenModuleSetBuild$MavenModuleSetBuildExecution.doRun(MavenModuleSetBuild.java:890)
    at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:534)
    at hudson.model.Run.execute(Run.java:1728)
    at hudson.maven.MavenModuleSetBuild.run(MavenModuleSetBuild.java:544)
    at hudson.model.ResourceController.execute(ResourceController.java:98)
    at hudson.model.Executor.run(Executor.java:404)
Build step 'Execute shell script on remote host using ssh' marked build as failure