Ubuntu部署失败报错 Package gnupg is not available

[YIYUFU]

请问有人遇到这个报错吗 （用的版本Ubuntu 20.04.6 LTS）

 => ERROR [server  5/12] RUN apt-get install -y --no-install-recommends   curl   gnupg   build-essential   pwgen   libffi-dev   sudo   git-core   libpq-dev
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 > [server  5/12] RUN apt-get install -y --no-install-recommends   curl   gnupg   build-essential   pwgen   libffi-dev   sudo   git-core   libpq-dev   g++ unilibssl-dev   default-libmysqlclient-dev   freetds-dev   libsasl2-dev   unzip   libsasl2-modules-gssapi-mit &&   apt-get clean &&   rm -rf /var/lib/apt/lists/*
3.455 Reading package lists...
3.505 Building dependency tree...
3.506 Reading state information...
3.508 Package gnupg is not available, but is referred to by another package.
3.508 This may mean that the package is missing, has been obsoleted, or
3.508 is only available from another source
3.508
3.508 E: Unable to locate package curl
3.508 E: Package 'gnupg' has no installation candidate
3.508 E: Unable to locate package build-essential
3.508 E: Unable to locate package pwgen
3.508 E: Unable to locate package libffi-dev
3.508 E: Unable to locate package sudo
3.508 E: Unable to locate package git-core
3.508 E: Unable to locate package libpq-dev
3.508 E: Unable to locate package unixodbc-dev
3.508 E: Unable to locate package xmlsec1
3.508 E: Unable to locate package libssl-dev
3.508 E: Unable to locate package default-libmysqlclient-dev
3.508 E: Unable to locate package freetds-dev
3.508 E: Unable to locate package libsasl2-dev
3.508 E: Unable to locate package unzip
3.508 E: Unable to locate package libsasl2-modules-gssapi-mit
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failed to solve: process "/bin/sh -c apt-get install -y --no-install-recommends   curl   gnupg   build-essential   pwgen   libffi-dev   sudo   git-core   libpev   xmlsec1   libssl-dev   default-libmysqlclient-dev   freetds-dev   libsasl2-dev   unzip   libsasl2-modules-gssapi-mit &&   apt-get clean &&   rm -rf /var/ot complete successfully: exit code: 100