如何在ubuntu码头映像上安装tzdata？

Question

我在Dockerfile中有下面一行。

RUN apt-get install -y tzdata

当我运行它时，它需要我的输入。在我提供了我的意见之后，它就挂在那里了。有人知道如何解决这个问题吗？

Step 25/25 : RUN apt-get install -y tzdata
 ---> Running in ee47a1beff84
Reading package lists...
Building dependency tree...
Reading state information...
The following NEW packages will be installed:
  tzdata
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 189 kB of archives.
After this operation, 3104 kB of additional disk space will be used.
Get:1 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 tzdata all 2018i-0ubuntu0.18.04 [189 kB]
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: 
Fetched 189 kB in 1s (219 kB/s)
Selecting previously unselected package tzdata.
(Reading database ... 25194 files and directories currently installed.)
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:
``

Answer 1

只有一行：

RUN DEBIAN_FRONTEND=noninteractive TZ=Etc/UTC apt-get -y install tzdata

Answer 2

您可以使用ARG和ENV指令来发挥您的优势：

ARG DEBIAN_FRONTEND=noninteractive
ENV TZ=Europe/Moscow
RUN apt-get install -y tzdata

这样，只有在构建映像时才定义DEBIAN_FRONTEND，而TZ将在运行时持久化。

Answer 3

您需要执行一系列命令：

    # set noninteractive installation
    export DEBIAN_FRONTEND=noninteractive
    # install tzdata package
    apt-get install -y tzdata
    # set your timezone
    ln -fs /usr/share/zoneinfo/America/New_York /etc/localtime
    dpkg-reconfigure --frontend noninteractive tzdata

(以#开头的命令是注释，您可以忽略它们)

最好的方法是创建脚本，将脚本复制到容器并在Dockerfile中执行它：

ADD yourscript.sh /yourscript.sh
RUN /yourscript.sh