https://blog.clarence.tw/2023/05/28/%e5%9c%a8-ubuntu-%e5%87%ba%e7%8f%be-key-is-stored-in-legacy-trusted-gpg-keyring-etc-apt-trusted-gpg-%e7%9a%84%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%b3%95%e4%bb%a5-hashicrop-%e7%82%ba%e4%be%8b/
在 Ubuntu 出現 Key is stored in legacy trusted.gpg keyring (/etc/apt/trusted.gpg) 的解決方法以 HashiCrop 為例