command.go

func (r *repo_handle) get_tar_file() (string, error) {
	target_dir, tmpdir_err := ioutil.TempDir("", "captain_app_tar")
	log.Println("Got temp directory for app tar", target_dir)
	if tmpdir_err != nil {
		return "", tmpdir_err
	}

	archive_path := target_dir + "/" + "app.tar"
	log.Println("Going to create the tar archive at path", archive_path)

	log.Println("Creating app tar file:", tar_path, "--exclude", ".git", "-cf", archive_path, "-C", r.root, ".")
	prepare_cmd := exec.Command(tar_path, "--exclude", ".git", "-cf", archive_path, "-C", r.root, ".")
	prepare_err := prepare_cmd.Run()

	if prepare_err != nil {
		return "", prepare_err
	}

	return archive_path, nil
}