在 Ubuntu 16.04 docker 映像中安装 apt-get：'/etc/resolv.conf'：设备或资源繁忙

Question

在相当普通的 Ubuntu 16.04 映像中运行 apt-get install 时，我收到以下错误消息：

ln: cannot remove '/etc/resolv.conf': Device or resource busy
dpkg: error processing package resolvconf (--configure):
 subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
 resolvconf

不过，这些软件包似乎已正确安装。如何解决？

我的 Dockerfile 看起来像这样：

FROM ubuntu:16.04
MAINTAINER Me Myself <me@myself.com>
RUN apt-get update && apt-get install -y git nano 
RUN apt-get upgrade -y

# set the timezone. Note: there is an Ubuntu 16.04 bug which
# requires this to be done this way: 
# http://stackoverflow.com/questions/40234847/docker-timezone-in-ubuntu-16-04-image/40235306#40235306
RUN ln -fs /usr/share/zoneinfo/Europe/Berlin /etc/localtime && dpkg-reconfigure -f noninteractive tzdata

RUN locale-gen en_US en_US.UTF-8 de_DE.UTF-8
ENV PATH="/opt/xyz/bin:${PATH}"

Answer 1

如https://github.com/moby/moby/issues/1297 中所述，您可以将以下行添加到您的Dockerfile：

RUN echo "resolvconf resolvconf/linkify-resolvconf boolean false" | debconf-set-selections

这样就可以安装resolvconf在容器内。

Answer 2

根据@Christian Berendt 的上述评论和回答，我仍然收到以下错误：

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: (This frontend requires a controlling tty.)
debconf: falling back to frontend: Teletype
dpkg-preconfigure: unable to re-open stdin: 

这是我的完整解决方案，将这些行添加到 Dockerfile 中：

这些行有助于安装 resolvconf withode debconf 错误

RUN apt-get update    
RUN apt-get install -y apt-utils debconf-utils dialog
RUN echo 'debconf debconf/frontend select Noninteractive' | debconf-set-selections
RUN echo "resolvconf resolvconf/linkify-resolvconf boolean false" | debconf-set-selections
RUN apt-get update
RUN apt-get install -y resolvconf