https://blog.clarence.tw/2023/03/05/%e5%9c%a8-apt-update-%e5%87%ba%e7%8f%be-is-configured-multiple-times-in-etc-apt-sources-list-d-%e7%9a%84%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%b3%95/