[Docker] 使用ubuntu涉及时区问题

不多说，以下Dockerfile会报错

FROM ubuntu:latest

RUN apt-get update && apt-get install -y 
    ssh 
    build-essential 
    gcc 
    g++ 
    gdb 
    clang 
    cmake 
    rsync 
    tar 
    python 
    vim 
    automake 
    openssh-client 
    openssh-server 
  && apt-get clean

RUN PermitRootLogin yes 
  && UsePAM no

RUN passwd root

COPY entrypoint.sh /sbin
RUN chmod +x /sbin/entrypoint.sh
ENTRYPOINT [ "/sbin/entrypoint.sh" ]

会卡在这里

Preparing to unpack .../tzdata_2018i-0ubuntu0.18.04_all.deb ...
Unpacking tzdata (2018i-0ubuntu0.18.04) ...
Setting up tzdata (2018i-0ubuntu0.18.04) ...
debconf: unable to initialize frontend: Dialog
debconf: (TERM is not set, so the dialog frontend is not usable.)
debconf: falling back to frontend: Readline
Configuring tzdata
------------------

Please select the geographic area in which you live. Subsequent configuration
questions will narrow this down by presenting a list of cities, representing
the time zones in which they are located.

  1. Africa      4. Australia  7. Atlantic  10. Pacific  13. Etc
  2. America     5. Arctic     8. Europe    11. SystemV
  3. Antarctica  6. Asia       9. Indian    12. US
Geographic area:

即使输入了6，还是僵死在那里。

解决方案：加入以下代码

RUN export DEBIAN_FRONTEND=noninteractive 
    && apt-get update 
    && apt-get install -y tzdata 
    && ln -fs /usr/share/zoneinfo/Asia/Shanghai /etc/localtime 
    && dpkg-reconfigure --frontend noninteractive tzdata

Have fun with Docker!