Chromium's scripts for creating Debian sysroot images, modified to fit Electron's dependencies.
$ go get github.com/aktau/github-release
$ export GITHUB_TOKEN=YOURTOKEN
$ ./scripts/sysroot-creator-wheezy.sh BuildSysrootARM
$ ./scripts/sysroot-creator-wheezy.sh UploadSysrootARM 0.1.0 "release description"