Github private repo not found

Describes the cause and action for error messages.

Error Message(English)：
private repo not found

Resolution

depでprivateリポジトリがupdateできなかったときの解決策 ・ nametake.info
https://nametake.github.io/posts/2018/09/20/dep-private-repo/

Private Repo causes image not found, but docker login ... - GitHub
https://github.com/swipely/docker-api/issues/455

New images fail to install private modules with yarn ・ Issue ... - GitHub
https://github.com/nodejs/docker-node/issues/386

dotfiles/Makefile at master ・ martinbaillie/dotfiles ・ GitHub
https://github.com/martinbaillie/dotfiles/blob/master/Makefile