构建以下 Docker 文件时出错
FROM ubuntu:21.04
RUN apt-get update && \
apt-get install --no-install-recommends -y curl=7.\* && \
apt-get install --no-install-recommends -y unzip=6.\* &&\
rm -rf /var/lib/apt/lists/*
RUN apt-get update && \
mkdir -p /usr/share/man/man1 && \
apt-get install --no-install-recommends -y maven=3.6.3-5 && \
apt-get clean && \
rm -rf /var/lib/apt/lists/*
第二次apt-get update
运行时发生错误。
错误如下:-
E: The repository 'http://security.ubuntu.com/ubuntu hirsute-security InRelease' is not signed.
W: GPG error: http://archive.ubuntu.com/ubuntu hirsute InRelease: gpgv, gpgv2 or gpgv1 required for verification, but neither seems installed
E: The repository 'http://archive.ubuntu.com/ubuntu hirsute InRelease' is not signed.
W: GPG error: http://archive.ubuntu.com/ubuntu hirsute-updates InRelease: gpgv, gpgv2 or gpgv1 required for verification, but neither seems installed
E: The repository 'http://archive.ubuntu.com/ubuntu hirsute-updates InRelease' is not signed.
W: GPG error: http://archive.ubuntu.com/ubuntu hirsute-backports InRelease: gpgv, gpgv2 or gpgv1 required for verification, but neither seems installed
E: The repository 'http://archive.ubuntu.com/ubuntu hirsute-backports InRelease' is not signed.
任何形式的帮助将不胜感激。