electron-builder打包时github包下载失败【解决办法】
各位朋友们，在使用electron开发时，选择了electron-builder作为编译打包工具时，是否经常遇到无法从github上下载依赖包问题，如下报错：
Get "https://github.com/electron/electron/releases/download/v6.1.12/electron-v6.1.12-win32-ia32.zip": dial tcp 20.205.243.166:443: connectex: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.
github.com/develar/app-builder/pkg/download.(*Downloader).follow.func1
/Volumes/data/Documents/app-builder/pkg/download/downloader.go:206
github.com/develar/app-builder/pkg/download.(*Downloader).follow
/Volumes/data/Documents/app-builder/pkg/download/downloader.go:234
github.com/develar/app-builder/pkg/download.(*Downloader).DownloadNoRetry
/Volumes/data/Documents/app-builder/pkg/download/downloader.go:128
github.com/develar/app-builder/pkg/download.(*Downloader).Download
/Volumes/data/Documents/app-builder/pkg/download/downloader.go:112
github.com/develar/app-builder/pkg/electron.(*ElectronDownloader).doDownload
/Volumes/data/Documents/app-builder/pkg/electron/electronDownloader.go:192
github.com/develar/app-builder/pkg/electron.(*ElectronDownloader).Download
/Volumes/data/Documents/app-builder/pkg/electron/electronDownloader.go:177
github.com/develar/app-builder/pkg/electron.downloadElectron.func1.1
/Volumes/data/Documents/app-builder/pkg/electron/electronDownloader.go:73
github.com/develar/app-builder/pkg/util.MapAsyncConcurrency.func2
/Volumes/data/Documents/app-builder/pkg/util/async.go:68报错截图：
原因就是github被墙，无法访问导致。
那么，解决办法也很简单：
1、找到可替代github的镜像，从这里手动下载对应zip包，推荐一个：https://github.xzc888.top
把github域名替换为上述镜像域名，如图：
https://github.com/electron/electron/releases/download/v6.1.12/electron-v6.1.12-win32-ia32.zip
替换为：
https://github.xzc888.top/electron/electron/releases/download/v6.1.12/electron-v6.1.12-win32-ia32.zip然后访问，完成下载，如图：
2、下载到zip包后，放到对应目录下：C:\Users\{username}\AppData\Local\electron\Cache
把下载后的zip包拷贝到目上述目录下，如图：
3、再次运行打包即可
备注：一点一滴，皆是成果！