How to run docker exec using Java on a docker container

Question

I have a docker container called pps-control. If I want to execute a script that lives inside the container which for this example takes 1 arg, I do from my linux terminal:

docker exec pps-control /bin/sh -c "./build/doControlStuff.sh 123456"

My question is: How do I achieve doing the same using java code? I know that there is something like:

package com.mypackage;
import static com.palantir.docker.compose.execution.DockerComposeExecArgument.arguments;
import static com.palantir.docker.compose.execution.DockerComposeExecOption.options;
import com.palantir.docker.compose.DockerComposeRule;

public class TestClass {
    public static DockerComposeRule docker;
    public static void testMethod() {
        docker.exec(options(), "pps-control", arguments("bash", "-c", "./build/doControlStuff.sh 123456"));
    }
}

But haven't been able to figure out how to use it (with correct syntax), any help would be appreciated with actual code example, thanks!

My Docker version is 18.03.0-ce, build 0520e24

What problem are you having? What version of Docker are you using? What is `option` and `args`? — dpwr, Apr 30 '18 at 13:55
@dpwrussell: caused by `ReflectiveCallable.InvocationTargetException` — Saffik, Apr 30 '18 at 15:58
@dpwrussell: I only get java.lang.NullPointerException at com.mypackage.TestClass.testMethod(TestClass.java:9) — Saffik, Apr 30 '18 at 16:18
@user1147070 - Yes I did by doing following: `private static DockerComposeExecOption option = DockerComposeExecOption.noOptions();` ... `DockerComposeExecArgument args = DockerComposeExecArgument.arguments("bash", "-c", "./build/doControlStuff.sh 123456");` ... `docker.exec(option, "pps-control", args);` — Saffik, Aug 09 '18 at 12:57

score 0 · Answer 1 · answered May 01 '18 at 03:05

0

I think your last argument should be “\”build/doControlStuff.sh 123456\””.

answered May 01 '18 at 03:05

Timir

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How to run docker exec using Java on a docker container

1 Answers1