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几个月前我曾尝试安装 docker cloud，但我删除了它。现在我已经从 Jessie 更新到 Debian Stretch，当我通过“apt-get update”更新时出现此错误并且不知道如何解决它。任何人都可以提供一些帮助吗？谢谢！

sudo apt-get update
Get:1 http://debian.mirrors.ovh.net/debian stretch-updates InRelease
Ign:2 http://debian.mirrors.ovh.net/debian stretch InRelease
Get:3 http://repo.cloud.docker.com/ubuntu dockercloud InRelease [1,383 B]
Get:4 http://debian.mirrors.ovh.net/debian stretch Release
Hit:5 https://deb.nodesource.com/node_6.x jessie InRelease
Hit:6 https://apt.dockerproject.org/repo debian-stretch InRelease
Hit:7 http://security.debian.org stretch/updates InRelease
Ign:8 http://download.draios.com/stable/deb stable-amd64/ InRelease
Hit:9 http://download.draios.com/stable/deb stable-amd64/ Release
Ign:3 http://repo.cloud.docker.com/ubuntu dockercloud InRelease
Fetched 203 kB in 0s (247 kB/s)
Reading package lists... Done
W: GPG error: http://repo.cloud.docker.com/ubuntu dockercloud InRelease: The following signatures were invalid: 278FE7333CFF7F8B60B677E85DD27147EF170D1C
W: The repository 'http://repo.cloud.docker.com/ubuntu dockercloud InRelease' is not signed.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
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1 回答 1

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W: GPG error: http://repo.cloud.docker.com/ubuntu dockercloud InRelease: The following signatures were invalid: 278FE7333CFF7F8B60B677E85DD27147EF170D1C
W: The repository 'http://repo.cloud.docker.com/ubuntu dockercloud InRelease' is not signed.

实际上这是一个警告而不是错误。似乎在您的 SourcesList 中的某个地方（例如 /etc/apt/sources.list）您仍然有一个 docker repo。

$ sudo grep -w "docker.com" /etc/apt/*.*

将显示 docker 的 url 在哪里。如果您不再需要它，只需注释此行。

好吧，如果您仍然需要 docker，此链接可能会有所帮助。

于 2017-07-07T22:47:18.610 回答