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ubuntudockertimezonedockerfiletzdata

why change ubuntu16.04 timezone in docker is invalid

I use command apt-get install -y tzdata && echo Asia/Shanghai > /etc/timezone && dpkg-reconfigure -f noninteractive tzdata to change timezone to UTC+8，but it doesn't work。My Dockerfile as follows:

FROM ubuntu:xenial
MAINTAINER Leon.Gan
RUN mv /etc/apt/sources.list /etc/apt/sources.list.bak \
  && echo "deb http://mirrors.aliyun.com/ubuntu/ xenial main" >/etc/apt/sources.list \
  && echo "deb-src http://mirrors.aliyun.com/ubuntu/ xenial main" >>/etc/apt/sources.list \
  && echo "deb http://mirrors.aliyun.com/ubuntu/ xenial-updates main" >>/etc/apt/sources.list \
  && echo "deb-src http://mirrors.aliyun.com/ubuntu/ xenial-updates main" >>/etc/apt/sources.list \
  && echo "deb http://mirrors.aliyun.com/ubuntu/ xenial universe" >>/etc/apt/sources.list \
  && echo "deb-src http://mirrors.aliyun.com/ubuntu/ xenial universe" >>/etc/apt/sources.list \
  && echo "deb http://mirrors.aliyun.com/ubuntu/ xenial-updates universe" >>/etc/apt/sources.list \
  && echo "deb-src http://mirrors.aliyun.com/ubuntu/ xenial-updates universe" >>/etc/apt/sources.list \
  && echo "deb http://mirrors.aliyun.com/ubuntu/ xenial-security main" >>/etc/apt/sources.list \
  && echo "deb-src http://mirrors.aliyun.com/ubuntu/ xenial-security main" >>/etc/apt/sources.list \
  && echo "deb http://mirrors.aliyun.com/ubuntu/ xenial-security universe" >>/etc/apt/sources.list \
  && echo "deb-src http://mirrors.aliyun.com/ubuntu/ xenial-security universe" >>/etc/apt/sources.list \
  && apt-get update \
  && apt-get install -y locales \
  && locale-gen zh_CN.UTF-8 \
  && apt-get install -y tzdata \
  && echo Asia/Shanghai > /etc/timezone \
  && dpkg-reconfigure -f noninteractive tzdata \
  && rm -rf /var/lib/apt/lists/*

ENV LC_ALL "zh_CN.UTF-8"
ENV LANG "zh_CN.UTF-8"

CMD ["/bin/bash"]

After build image, I enter the container, run command cat /etc/timezone，the content is still Etc/UTC. It means my command echo Asia/Shanghai > /etc/timezone in Dockerfile is not work. So, plz teach me how to change the timezone correctly, thanks.

Solution

  • I assume dpkg-reconfigure -f noninteractive tzdata does something wrong.

    I recommend to either set ENV TZ=Asia/Shanghai and/or to run

    ln -s -f /usr/share/zoneinfo/Asia/Shanghai /etc/localtime