assertNotNull(envMap);
    }

    public void test_init_withDockerEnvironment() {
        Map<String, String> dockerEnv = new HashMap<>();
        dockerEnv.put("FESS_APP_TYPE", "docker");
        activityHelper.setEnvMap(dockerEnv);
        activityHelper.init();
        assertTrue(activityHelper.useEcsFormat);
    }

    public void test_init_withNonDockerEnvironment() {

// https://github.com/containers/podman/blob/master/libpod/runtime.go
//
//	"/.dockerenv":        "file",
//	"/run/.containerenv": "file",
func IsDocker() bool {
	var err error
	for _, envfile := range []string{
		"/.dockerenv",
		"/run/.containerenv",
	} {
		_, err = os.Stat(envfile)
		if err == nil {
			return true
		}
	}
	if osIsNotExist(err) {