async bindImageId () {
  for (let i = 0; i < this.data.img_src.length; i++) {
    const res = await wx.cloud.uploadFile({
      cloudPath: 'xxx',
      filePath: 'yyy'
      // 不要加 success 和 fail
    })
    goodInfo.imgId.push(res.fileId)
  }
}