Using the following combination:

• connection to Docker via unix:///var/run/docker.sock
• set hostname to the Jenkins master IP
• set connect to slaves via SSH

I am expecting the docker-plugin to be able to create a container, inject the SSH key and connect

What I see instead is a NPE:

java.lang.NullPointerExceptionjava.lang.NullPointerException at io.jenkins.docker.connector.DockerComputerSSHConnector.createLauncher(DockerComputerSSHConnector.java:230) at io.jenkins.docker.connector.DockerComputerConnector.createLauncher(DockerComputerConnector.java:91) at com.nirima.jenkins.plugins.docker.DockerTemplate.doProvisionNode(DockerTemplate.java:566) at com.nirima.jenkins.plugins.docker.DockerTemplate.provisionNode(DockerTemplate.java:528) at com.nirima.jenkins.plugins.docker.DockerCloud$1.run(DockerCloud.java:365) at jenkins.util.ContextResettingExecutorService$1.run(ContextResettingExecutorService.java:28) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748)

docker-plugin version (git describe HEAD):

docker-plugin-1.1.5-9-g6e6f38d