https://etckeeper.branchable.com/
https://docs.github.com/en/get-started/getting-started-with-git/managing-remote-repositories?platform=linux
https://docs.github.com/en/authentication/connecting-to-github-with-ssh/generating-a-new-ssh-key-and-adding-it-to-the-ssh-agent
https://serverfault.com/questions/411494/etckeeper-on-custom-directory#411512