我希望这个命令能够正常运行：
docker run --rm ubuntu:focal apt-get update
然而，我得到的却是：
Get:1 http://ports.ubuntu.com/ubuntu-ports focal InRelease [265 kB]
Err:1 http://ports.ubuntu.com/ubuntu-ports focal InRelease
At least one invalid signature was encountered.
Get:2 http://ports.ubuntu.com/ubuntu-ports focal-updates InRelease [114 kB]
Err:2 http://ports.ubuntu.com/ubuntu-ports focal-updates InRelease
At least one invalid signature was encountered.
Get:3 http://ports.ubuntu.com/ubuntu-ports focal-backports InRelease [108 kB]
Err:3 http://ports.ubuntu.com/ubuntu-ports focal-backports InRelease
At least one invalid signature was encountered.
Get:4 http://ports.ubuntu.com/ubuntu-ports focal-security InRelease [114 kB]
Err:4 http://ports.ubuntu.com/ubuntu-ports focal-security InRelease
At least one invalid signature was encountered.
Reading package lists...
W: GPG error: http://ports.ubuntu.com/ubuntu-ports focal InRelease: At least one invalid signature was encountered.
E: The repository 'http://ports.ubuntu.com/ubuntu-ports focal InRelease' is not signed.
W: GPG error: http://ports.ubuntu.com/ubuntu-ports focal-updates InRelease: At least one invalid signature was encountered.
E: The repository 'http://ports.ubuntu.com/ubuntu-ports focal-updates InRelease' is not signed.
W: GPG error: http://ports.ubuntu.com/ubuntu-ports focal-backports InRelease: At least one invalid signature was encountered.
E: The repository 'http://ports.ubuntu.com/ubuntu-ports focal-backports InRelease' is not signed.
W: GPG error: http://ports.ubuntu.com/ubuntu-ports focal-security InRelease: At least one invalid signature was encountered.
E: The repository 'http://ports.ubuntu.com/ubuntu-ports focal-security InRelease' is not signed.
无论我替换哪个发布标签，它们都会失败。
docker 版本输出：
Client: Docker Engine - Community
Version: 23.0.5
API version: 1.42
Go version: go1.20.3
Git commit: bc4487a59e
Built: Wed Apr 26 14:46:06 2023
OS/Arch: darwin/arm64
Context: default
Server: Docker Desktop 4.19.0 (106363)
Engine:
Version: 23.0.5
API version: 1.42 (minimum version 1.12)
Go version: go1.19.8
Git commit: 94d3ad6
Built: Wed Apr 26 16:17:14 2023
OS/Arch: linux/arm64
Experimental: false
containerd:
Version: 1.6.20
GitCommit: 2806fc1057397dbaeefbea0e4e17bddfbd388f38
runc:
Version: 1.1.5
GitCommit: v1.1.5-0-gf19387a
docker-init:
Version: 0.19.0
GitCommit: de40ad0
我原本预计会有很多人受到此事影响，但我没有在推特上发现任何其他报道。
更新：
我在 Linux Docker 主机上尝试了相同的命令并且运行正常：
Client: Docker Engine - Community
Version: 20.10.23
API version: 1.41
Go version: go1.18.10
Git commit: 7155243
Built: Thu Jan 19 17:45:08 2023
OS/Arch: linux/amd64
Context: default
Experimental: true
Server: Docker Engine - Community
Engine:
Version: 20.10.23
API version: 1.41 (minimum version 1.12)
Go version: go1.18.10
Git commit: 6051f14
Built: Thu Jan 19 17:42:57 2023
OS/Arch: linux/amd64
Experimental: false
containerd:
Version: 1.6.16
GitCommit: 31aa4358a36870b21a992d3ad2bef29e1d693bec
runc:
Version: 1.1.4
GitCommit: v1.1.4-0-g5fd4c4d
docker-init:
Version: 0.19.0
GitCommit: de40ad0
并且运行正常。
答案1
原来是这个问题：
https://stackoverflow.com/questions/62473932/atleast-one-invalid-signature-was-encountered
包含了我需要的建议。
以机智：
运行docker system prune清除了导致失败的磁盘空间问题。