Improving how transformation cmd completion is detected

Signed-off-by: gabriel-farache <gfarache@redhat.com>

internal/filesystem/filesystem.go

@@ -2427,6 +2427,14 @@ func (fs *FileSystem) runTransform(currentRunDir string, currentRunConfigPaths [
 		logrus.Errorf("failed to start the transform command. Error: %q", err)
 		return err
 	}
+	go func() {
+		if err := cmd.Wait(); err != nil {
+			logrus.Errorf("failed to wait for end of the transform command. Error: %q", err)
+		}
+		logrus.Debug("Closing transform channel")
+		transformCh <- nil
+		close(transformCh)
+	}()
 	wg := sync.WaitGroup{}
 	outCh := make(chan string, 10)
 	stdoutReader := bufio.NewReader(stdout)
@@ -2461,13 +2469,7 @@ func (fs *FileSystem) runTransform(currentRunDir string, currentRunConfigPaths [
 		wg.Wait()
 		close(outCh)
 	}()
-	flag := true
 	for outputLine := range outCh {
-		if flag && strings.Contains(outputLine, portStr) {
-			flag = false
-			transformCh <- nil
-			close(transformCh)
-		}
 		if verbose {
 			generateVerboseLogs(outputLine)
 		} else {