How to run a docker image from java Program?

Question

I'm trying to run an Ubuntu image from a java program using a script; here is how:

my java code:

public static void main(String[] args) {
    executeCommand("/home/abrahem/IdeaProjects/untitled3/src/createContainer.sh");
}


public static void executeCommand(String filePath) {
    File file = new File(filePath);
    if (!file.isFile()) {
        throw new IllegalArgumentException("The file " + filePath + " does not exist");
    }
    try {
        if (isLinux()) {
            Process p = Runtime.getRuntime().exec("sh " + filePath);
            p.waitFor(); // i tried to remove this but still not work for my me 
        } else if (isWindows()) {
            Runtime.getRuntime().exec("cmd /c start " + filePath);
        }
    } catch (InterruptedException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

here is my createContainer.sh script file:

#!bin/sh
sudo docker run ubuntu

when I go to bin and type:

docker ps

or

docker ps -a

It should show the running Ubuntu container, but it doesn't.

Note: there is nothing wrong with the shell location; I try to create file in shell file and it works.

sudo docker run --name myubuntu -itd ubuntu try this instead. — Tara Prasad Gurung
– Tara Prasad Gurung, Commented Jan 14, 2020 at 3:51
@RamPrakash thank for comment, but how? there is no exception to debug and i have try block. — Abrahem Gh
– Abrahem Gh, Commented Jan 14, 2020 at 3:58
You can try and follow this tutorial: baeldung.com/run-shell-command-in-java to obtain the output from the program you run. — mckszcz
– mckszcz, Commented Jan 14, 2020 at 8:47

Audrius Meškauskas · Accepted Answer · 2020-01-14 08:52:04Z

1

You do not capture any error messages or normal output from your process. Maybe it just works?

Use getErrorStream() and getOutputStream() methods of Process to capture the output from the process somewhat like described here. You may just see the expected output. If not, it should be the error message on the error stream.

answered Jan 14, 2020 at 8:52

Audrius Meškauskas

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