在Docker中安装openjdk会删除基本的Linux命令 [英] Installing openjdk in docker removes basic linux commands

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本文介绍了在Docker中安装openjdk会删除基本的Linux命令的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我旨在制作一个包含qt-android和android-studio工具的docker映像.我喜欢dockerfile的基础这一个，并且我没有安装 software-properties-common ，而是安装了 build-essential 和 libgl1-mesa-dev .Java库和这些库均已成功安装，但是随后，诸如 mkdir ， ls ， cd 之类的基本命令变得无法识别，从而使docker构建过程返回，代码为127(找不到命令).

I aim to make a docker image that contains qt-android and android-studio tool. I took like base for dockerfile this one, and, instead of installing software-properties-common, I've put to install build-essential and libgl1­-mesa­-dev. Both Java and theses libraries were installed with success, but, then, basic commands like mkdir, ls, cd turned to be unrecognizable, making docker build process return with code 127 (command not found).

为什么会这样?

推荐答案

我发现，如果不对映像进行更早的更改，我什至无法让您的Dockerfile显示问题.实际是您的问题所在的是:

I found that I couldn't even get your Dockerfile to display the issue without making some changes earlier in the image. The bit that was actually your problem though is: 

ENV JAVA_HOME /usr/lib/jvm/java-8-openjdk-amd64/
ENV PATH JAVA_HOME/bin
ENV CLASSPATH JAVA_HOME/lib/tools.jar
ENV MANPATH JAVA_HOME/man
RUN export JAVA_HOME PATH CLASSPATH MANPATH

应成为:

ENV JAVA_HOME /usr/lib/jvm/java-8-openjdk-amd64/
ENV PATH $PATH:$JAVA_HOME/bin
ENV CLASSPATH $JAVA_HOME/lib/tools.jar
ENV MANPATH $JAVA_HOME/man

这是因为设置PATH时，您不应该删除它的当前内容(因此 $ PATH:)，而是要添加JAVA_HOME变量的值而不是文字字符串JAVA_HOME(因此 $ JAVA_HOME/bin ).

This is because when you set the PATH you shouldn't remove the current contents of it (hence $PATH:) and you want to add the value of the JAVA_HOME variable rather than the literal string JAVA_HOME (hence $JAVA_HOME/bin).

此外，您使用ENV设置的任何内容都无需导出，因为它可用于图像中的每个进程.

Also, anything you set with ENV you will not need to export as it will be available for every process in your image.

我还必须安装一些软件包以使add-apt-repository可用，但我不确定100％是否是因为ubuntu:latest指的是我系统上的其他映像(可能您应该考虑使用标记用于您希望使用的特定版本，例如 ubuntu:xenial ).

I also had to install some packages to make add-apt-repository available but I'm not 100% sure if this is because ubuntu:latest refers to a different image on my system (possibly you should consider using a tag for the specific version you wish to use like ubuntu:xenial).

我还必须安装wget&我更正了许多您不打算使用 wget -O-的地方(因为您显然想将文件写入磁盘).

I also had to install wget & I corrected a number of places where you were using wget -O - where you didn't mean to (as you clearly wanted to write the files to disk).

我使用的完整Dockerfile&能够成功构建(我没有测试运行它，因为我不确定预期的行为并不会说您的语言)是:

The full Dockerfile which I used & was able to get to successfully build (I didn't test running it as I'm not sure on expected behaviour & don't speak your language) is:

 # BASED ON : https://hub.docker.com/r/picoded/ubuntu-openjdk-8-jdk/~/dockerfile/

FROM ubuntu:latest
MAINTAINER Inacio Medeiros <inaciogmedeiros@gmail.com>
USER root

# Install the python script required for "add-apt-repository"
RUN apt-get update
RUN apt-get install build-essential libgl1-mesa-dev -y --force-yes

# Sets language to UTF8 : this works in pretty much all cases
ENV LANG pt_BR.UTF-8
RUN locale-gen $LANG

# Install add-apt-repository
RUN apt-get install software-properties-common python-software-properties wget -y --force-yes

# INSTALL JAVA
# ==============================================================
# Setup the openjdk 8 repo
RUN add-apt-repository ppa:openjdk-r/ppa

# Install java8
RUN apt-get update && apt-get install openjdk-8-jdk -y --force-yes

# Setup JAVA_HOME and other environment variables, this is useful for docker commandline
ENV JAVA_HOME /usr/lib/jvm/java-8-openjdk-amd64/
ENV PATH $PATH:$JAVA_HOME/bin
ENV CLASSPATH $JAVA_HOME/lib/tools.jar
ENV MANPATH $JAVA_HOME/man
# ==============================================================

# Install QT Android
# ==============================================================
RUN mkdir /var/tmp/qt-android \
      && cd /var/tmp/qt-android \
      && wget "http://download.qt.io/official_releases/qt/5.5/5.5.0/qt-opensource-linux-x64-android-5.5.0-2.run" \
      && chmod 777 qt-opensource-linux-x64-android-5.5.0-2.run

CMD /var/tmp/qt-android/qt-opensource-linux-x64-android-5.5.0-2.run

RUN cd /var/tmp/qt-android \
      && cd .. \
      && rm -rf /var/tmp/qt-android
# ==============================================================

# Install Ant
RUN apt-get install ant -y --force-yes

# Install SDK
RUN mkdir /opt/android-sdk \
      && cd /opt/android-sdk \
      && wget -O - "http://dl.google.com/android/android-sdk_r24.3.4-linux.tgz" \
      | tar --strip-components=1 -zxf -

#Install NDK
RUN mkdir /var/tmp/ndk \
      && cd /var/tmp/ndk \
      && wget "http://dl.google.com/android/ndk/android-ndk-r10e-linux-x86_64.bin" \
      && chmod 777 android-ndk-r10e-linux-x86_64.bin

CMD /var/tmp/ndk/android-ndk-r10e-linux-x86_64.bin

RUN cd /var/tmp/ndk \
      && cd .. \
      && rm -rf ndk

# Run SDK Update
RUN cd /opt/android-sdk/tools \
       && chmod 777 android

CMD /opt/android-sdk/tools/android update sdk

# Update libraries
RUN apt-get update && apt-get upgrade -y --force-yes

# Install libraries
RUN apt-get install -y --force-yes libstdc++6 libgcc1 zlib1g libncurses5
RUN apt-get install -y --force-yes libsdl1.2debian

# Install Android studio
# Source: https://github.com/wolfitem/docker/blob/master/Dockerfiles/android-studio/Dockerfile
RUN apt-get install unzip -y --force-yes
RUN wget 'https://dl.google.com/dl/android/studio/ide-zips/2.1.0.9/android-studio-ide-143.2790544-linux.zip' -O /tmp/studio.zip && unzip -d /opt /tmp/studio.zip && rm /tmp/studio.zip


#clean up
RUN apt-get clean
RUN apt-get purge

USER developer

CMD /opt/android-studio/bin/studio.sh

我注意到的事情是，在很多地方您都可以执行类似 CMD/var/tmp/qt-android/qt-opensource-linux-x64-android-5.5.0-2的操作.在您想要运行/var/tmp/qt-android/qt-opensource-linux-x64-android-5.5.0-2.run 的地方运行.我认为您可能已经误解了CMD的功能-它实际上并未运行该命令，而是对其进行了设置，因此当您使用 docker run 从映像运行容器时，它将是默认命令.

The thing which I did notice is there are a number of places where you do something like CMD /var/tmp/qt-android/qt-opensource-linux-x64-android-5.5.0-2.run where it looks like you are wanting to run /var/tmp/qt-android/qt-opensource-linux-x64-android-5.5.0-2.run. I think you have possibly misunderstood what CMD does - it doesn't actually run that command, it sets it up so that when you run a container from the image with docker run that will be the default command.

如果我不得不重构Dockerfile，我会让它看起来更像下面的文件.但这当前无法建立，因为我将其更改为实际上称为上述内容.当前 qt-opensource-linux-x64-android-5.5.0-2.run 失败，因为它找不到要连接的显示器.

If I had to refactor the Dockerfile I would make it look more like the one below. But this currently fails to build because I changed it to actually call the things mentioned above. Currently qt-opensource-linux-x64-android-5.5.0-2.run fails because it can't find a display to connect to.

FROM ubuntu:latest
MAINTAINER Inacio Medeiros <inaciogmedeiros@gmail.com>

# Install the python script required for "add-apt-repository"
RUN apt-get update \
    && apt-get install -y --force-yes \
        build-essential \
        libgl1-mesa-dev \
        python-software-properties \
        software-properties-common \
        wget \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*

# Sets language to UTF8 : this works in pretty much all cases
ENV LANG pt_BR.UTF-8
RUN locale-gen $LANG

# INSTALL JAVA
# ==============================================================
# Setup the openjdk 8 repo
RUN add-apt-repository ppa:openjdk-r/ppa

# Install java8
RUN apt-get update \
    && apt-get install -y --force-yes \
        openjdk-8-jdk \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*

# Setup JAVA_HOME and other environment variables, this is useful for docker commandline
ENV JAVA_HOME /usr/lib/jvm/java-8-openjdk-amd64/
ENV PATH $PATH:$JAVA_HOME/bin
ENV CLASSPATH $JAVA_HOME/lib/tools.jar
ENV MANPATH $JAVA_HOME/man
# ==============================================================

# Install QT Android
# ==============================================================
RUN mkdir -p /var/tmp/qt-android \
    && cd /var/tmp/qt-android \
    && wget "http://download.qt.io/official_releases/qt/5.5/5.5.0/qt-opensource-linux-x64-android-5.5.0-2.run" \
    && chmod 777 qt-opensource-linux-x64-android-5.5.0-2.run \
    && /var/tmp/qt-android/qt-opensource-linux-x64-android-5.5.0-2.run \
    && cd / \
    && rm -rf /var/tmp/qt-android
# ==============================================================

# Install Ant
RUN apt-get update \
    && apt-get install -y --force-yes \
        ant \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*

# Install SDK
RUN mkdir -p /opt/android-sdk \
    && cd /opt/android-sdk \
    && wget -O - "http://dl.google.com/android/android-sdk_r24.3.4-linux.tgz" \
        | tar --strip-components=1 -zxf -

#Install NDK
RUN mkdir /var/tmp/ndk \
      && cd /var/tmp/ndk \
      && wget "http://dl.google.com/android/ndk/android-ndk-r10e-linux-x86_64.bin" \
      && chmod 777 android-ndk-r10e-linux-x86_64.bin \
      && /var/tmp/ndk/android-ndk-r10e-linux-x86_64.bin \
      && cd / \
      && rm -rf /var/tmp/ndk

# Run SDK Update
RUN cd /opt/android-sdk/tools \
    && chmod 777 android \
    && /opt/android-sdk/tools/android update sdk

# Update libraries
RUN apt-get update \
    && apt-get upgrade -y --force-yes \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*

# Install libraries
RUN apt-get update \
    && apt­-get install -y --force-yes \
        libstdc++6 \
        libgcc1 \
        libsdl1.2debian \
        zlib1g \
        libncurses5 \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*

# Install Android studio
# Source: https://github.com/wolfitem/docker/blob/master/Dockerfiles/android-studio/Dockerfile
RUN apt-get update \
    && apt-get install -y --force-yes \
        unzip \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*

RUN wget 'https://dl.google.com/dl/android/studio/ide-zips/2.1.0.9/android-studio-ide-143.2790544-linux.zip' -O /tmp/studio.zip \
    && unzip -d /opt /tmp/studio.zip \
    && rm /tmp/studio.zip

USER developer

CMD /opt/android-studio/bin/studio.sh

让我知道您是否还有其他问题，我会尽力回答.

Let me know if you have any further questions and I will do my best to answer them.

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