electron-builder 打包不能从 github 下载 electron 的问题

执行nr build打包尝试从 https://github.com/electron/electron/releases/download/v19.0.8/electron-v19.0.8-linux-x64.zip 下载 electron 失败，原因众所周知。解决办法是手动下载对应文件放入缓存目录，参考这个。

cd ~/.cache/electron
wget https://github.com/electron/electron/releases/download/v19.0.8/electron-v19.0.8-linux-x64.zip
wget https://github.com/electron/electron/releases/download/v19.0.8/SHASUMS256.txt -O SHASUMS256.txt-19.0.8

重新打包此错误即可消失。