자식 https://www.liaoxuefeng.com/wiki/896043488029600/896954117292416
자식 구성 SSH https://blog.csdn.net/binyao02123202/article/details/20130891
자식은 HTTPS SSH로 변경 https://www.jianshu.com/p/978cac9a10bc
https를 설명 https://www.bilibili.com/video/av53593472?p=5