How can I remove all running docker containers after all tests in a JUnit test suite have finished running?

Question

I have a JUnit test suite that comprises of 3 smaller test suites. When these tests are run, 2 docker containers are spun up (an oracle slim db and an elasticsearch). I want to be able to remove these test containers after all of the tests have finished running.

I have tried a cleanup method in the main test suite which has not worked as below:

@Suite
@SelectClasses({
    IntegrationTestSuite1.class,
    IntegrationTestSuite2.class,
    IntegrationTestSuite3.class,
})
@SuiteDisplayName("Full integration test suite")
@SpringBootTest(classes = MainApplication.class)
public class FullIntegrationTestSuite {

  @AfterAll
  public static void cleanup() {
    String script = "cd ../../../resources; docker rm -f $(docker ps -q)";
    ProcessBuilder processBuilder = new ProcessBuilder();
    processBuilder.command("powershell.exe", "-Command", script);
    try {
      Process process = processBuilder.start();
      process.waitFor();
    } catch (IOException | InterruptedException e) {
      e.printStackTrace();
    }
  }
}

The cleanup method is never invoked after all tests have run. The smaller suites are annotated with @SelectPackages("sometestpackage") which contain the test classes for each package.

Is there another/better way I should be doing this or something incorrect with how I am attempting it above?