Ubuntu 18.04 添加 gpg 密钥失败，出现 gpg-agent 未找到错误
Ubuntu 18.04 add gpg key failed with gpg-agent not found error
尝试将我们的基础映像迁移到稳定版 Ubuntu 18.04，当我们尝试添加我们的 gpg 密钥时，出现此错误：
root@77ff14f29cab:/# apt-key add apt-key.gpg
gpg: failed to start agent '/usr/bin/gpg-agent': No such file or directory
gpg: can't connect to the agent: No such file or directory
gpg: failed to start agent '/usr/bin/gpg-agent': No such file or directory
gpg: can't connect to the agent: No such file or directory
您缺少 gpg-agent 包，很可能是：
gpg-agent/testing,unstable,now 2.2.5-1 amd64 [installed,automatic]
GNU privacy guard - cryptographic agent
您应该 运行 的命令是 apt install gpg-agent。
尝试将我们的基础映像迁移到稳定版 Ubuntu 18.04，当我们尝试添加我们的 gpg 密钥时，出现此错误：
root@77ff14f29cab:/# apt-key add apt-key.gpg
gpg: failed to start agent '/usr/bin/gpg-agent': No such file or directory
gpg: can't connect to the agent: No such file or directory
gpg: failed to start agent '/usr/bin/gpg-agent': No such file or directory
gpg: can't connect to the agent: No such file or directory
您缺少 gpg-agent 包，很可能是：
gpg-agent/testing,unstable,now 2.2.5-1 amd64 [installed,automatic]
GNU privacy guard - cryptographic agent
您应该 运行 的命令是 apt install gpg-agent。