問題描述：執行sudo apt update報警告
W: https://community-packages.deepin.com/printer/dists/eagle/InRelease: The key(s) in the keyring /etc/apt/trusted.gpg.d/appstore.gpg are ignored as the file has an unsupported filetype.
解決方法： 刪除/etc/apt/trusted.gpg.d/appstore.gpg 或者將其重命名為.bak
cd /etc/apt/trusted.gpg.d/
sudo mv appstore.gpg appstore.gpg.bak