async stop() {
    await this.bind();
    if (!this.isCreated()) {
      console.log('Container is not created. Skip stopping.');
      return;
    }
    if (this.isRunning()) {
      const container = this.docker.getContainer(this.id);
      await container.stop();
      this._running = false;
      console.log(`Container ${this.name} is stopped.`);
    } else {
      console.log(`Container ${this.name} is not running. Skip stopping.`);
    }
  }
Stop the container.

@return {Promise.<void>}