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@施 up您好 我也遇到了 导入公钥： sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 7EA0A9C3F273FCD8 但操作后不管用，使用apt-get update 还是报上述错误。
用chmod a+r /usr/share/keyrings/docker-archive-keyring.gpg 但是显示docker-archive-keyring.gpg no such files