例如，我试图设置一个包含mail-stack-delivery包的容器：

FROM ubuntu

RUN apt-get install -y mail-stack-delivery

然而，dockerfile生成几十个错误，构建时，它们的行：

debconf: unable to initialize frontend: Dialog
debconf: (TERM is not set,so the dialog frontend is not usable.)
debconf: falling back to frontend: Readline
debconf: unable to initialize frontend: Readline
debconf: (Can't locate Term/ReadLine.pm in @INC (@INC contains: /etc/perl /usr/local/lib/perl/5.14.2 /usr/local/share/perl/5.14.2 /usr/lib/perl5 /usr/share/perl5 /usr/lib/perl/5.14 /usr/share/perl/5.14 /usr/local/lib/site_perl .) at /usr/share/perl5/Debconf/FrontEnd/Readline.pm line 7,<> line 11.)
debconf: falling back to frontend: Teletype
dpkg-preconfigure: unable to re-open stdin:

从我的理解，我只是简单地不能响应对话框，但有一些方法，我可以传递一个参数，以提前回答每个问题？我知道它只是改变一些配置，所以我可以做到事后，但大概最好让安装脚本做到这一切，以便一切正确设置。