Get Container ERR/OUT/IN

[debxrshi]

Hi, I'm a beginner, creating a container and attaching to in/out. Container is getting created fine, but how to capture the output? Code I'm using:

DockerClient client = Client.clientInit();
        CreateContainerResponse container = client.createContainerCmd("python:slim")
                .withCmd("/bin/sh","-c","uname -a")
                .withAttachStderr(true)
                .withAttachStdin(true)
                .withName("sandbox-dev")
                .exec();
        client.startContainerCmd(container.getId()).exec();

Also, how to get the STDERR/STDOUT/ attach to STDIN via docker exec equivalent code?

PS- clientInit is defined:

public class Client {
    public static DockerClient clientInit(){
        DockerClientConfig config = DefaultDockerClientConfig.createDefaultConfigBuilder().build();
        ZerodepDockerHttpClient httpClient = new ZerodepDockerHttpClient.Builder().dockerHost(config.getDockerHost()).build();
        return DockerClientImpl.getInstance(config,httpClient);
    }
}

[fujiwarazz]

same issue. I cann`t the output of the container code output by using withstdin(), have you solve this problem?

[debxrshi]

@fujiwarazz yeah I found a solution but it's really bad code. Have you found any solution?

[fujiwarazz]

you can try client init with ApacheHttp5 instead

[debxrshi]

@fujiwarazz why?

[raunaqpahwa]

Hey @debxrshi and @fujiwarazz this might help-
https://github.com/raunaqpahwa/CodeExecutionEngine/blob/440f46869bf229aabc73d280a655bdca64f36530/src/main/java/com/raunaqpahwa/codeexecutor/services/impl/JavaCodeExecutionStrategy.java#L58

You can pass a custom callback while executing command in the docker container and that will help you fetch stdout and stderr.