GPG 错误由于公钥不可用，无法验证以下签名答案

【问题标题】：GPG error The following signatures couldn't be verified because the public key is not availableGPG 错误由于公钥不可用，无法验证以下签名
【发布时间】：2021-04-12 03:07:27
【问题描述】：

我正在关注this 在 Jenkins 容器中安装 Docker 的指南

这是 Jenkins 容器的 Dockerfile：

FROM jenkins:1.596
 
USER root
RUN apt-get update
RUN echo "jenkins ALL=NOPASSWD: ALL" >> /etc/sudoers

# setup docker repository
RUN apt-get install
RUN apt-get update

RUN echo "deb http://httpredir.debian.org/debian jessie-backports main contrib non-free" >> /etc/apt/sources.list

RUN apt-get update

RUN apt-transport-https \
    && ca-certificates \
    && curl \
    && gnupg-agent \
    && software-properties-common

RUN curl -fsSL https://download.docker.com/linux/debian/gpg | apt-key add -
RUN apt-key fingerprint 0EBFCD88

RUN add-apt-repository \
   "deb [arch=amd64] https://download.docker.com/linux/debian \
   $(lsb_release -cs) \
   stable"
   
# install docker engine
RUN apt-get update
RUN apt-get install docker-ce docker-ce-cli containerd.io

USER jenkins

当我构建图像时，出现以下错误：

Reading package lists...
W: GPG error: http://security.debian.org jessie/updates InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 9D6D8F6BC857C906 NO_PUBKEY AA8E81B4331F7F50
W: GPG error: http://http.debian.net jessie-updates InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 7638D0442B90D010
W: GPG error: http://http.debian.net jessie Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 7638D0442B90D010

【问题讨论】：

标签： linux docker jenkins jenkins-pipeline debian

【解决方案1】：

apt 有一组受信任的密钥，有时我们只需要添加缺少的密钥。

您只需运行以下命令即可添加缺少的键：

apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 9D6D8F6BC857C906 AA8E81B4331F7F50 7638D0442B90D010

那么，你的 Dockerfile 的开头可能是这样的：

FROM jenkins:1.596

USER root
RUN apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 9D6D8F6BC857C906 AA8E81B4331F7F50 7638D0442B90D010
RUN apt-get update
...

您好。

【讨论】：