Run a command in a running container, get log and wait for completion

[Luciano Molinari]

Hi all,

I have a running container and I want to run a bash script in it. I've been able to run the command, but, as it takes a few seconds to complete, I'd like to make the caller Thread to wait until the command is completed and, if possible, to get the output of it.

I've gone through the examples here (https://github.com/docker-java/docker-java/blob/master/src/test/java/com/github/dockerjava/core/command/ExecStartCmdImplTest.java), but couldn't find a way to achieve what I want.

Any ideas?

Thanks in advance.

Kind regards,

Luciano

[zhao peng]

hi. do u resolve this problem?

[marcuslinke]

This should be solvable through docker exec functionality (see https://docs.docker.com/engine/reference/api/docker_remote_api_v1.21/#exec-create and https://docs.docker.com/engine/reference/api/docker_remote_api_v1.21/#exec-start). There are equivalent APIs in docker-java. Meanwhile (in the latest 3.0.0-SNAPSHOT) there is experimental support for passing local STDIN to the container also (see https://github.com/docker-java/docker-java/blob/master/src/test/java/com/github/dockerjava/netty/exec/ExecStartCmdExecTest.java) for examples.

Hope this helps

Marcus

[shengb...@gmail.com]

Hi,I want to ask you a question.You said you have been able to run the command in a running container.How do you finish.Did you follow the example here (https://github.com/docker-java/docker-java/blob/master/src/test/java/com/github/dockerjava/core/command/ExecStartCmdImplTest.java).I use this example and want to send stdin data to a running container.When I send "ls" command to a running container.and want to see the output.But to my surprise,it didn't get anything.Could you tell me why?Thanks a lot.