前往 How to install gpg keys from behind a firewall? - Server Fault
常見Apt key proxy問答
Apt-key removeOpenpgp keyserverSudo apt key addgpg: keyserver receive failed: no nameApt key advAdd-apt-repository proxyPGP key serverGpg proxyAnsible apt keyGpg keyservergpg: keyserver receive failed: no keyserver available