docker基礎鏡像製作

項目往基於容器上遷移，涉及到最基本的基礎鏡像製作，本文介紹製作一個基礎的jdk的鏡像並push到私有倉庫。

準備文件
    sources.list
    由於需要使用apt安裝一些相關的組件，將源指向我們公司內部的源，內容如下：

deb http://192.168.88.8/ubuntu/ trusty main restricted universe multiverse
deb http://192.168.88.8/ubuntu/ trusty-security main restricted universe multiverse
deb http://192.168.88.8/ubuntu/ trusty-updates main restricted universe multiverse
deb http://192.168.88.8/ubuntu/ trusty-proposed main restricted universe multiverse
deb http://192.168.88.8/ubuntu/ trusty-backports main restricted universe multiverse

deb-src http://192.168.88.8/ubuntu/ trusty main restricted universe multiverse
deb-src http://192.168.88.8/ubuntu/ trusty-security main restricted universe multiverse
deb-src http://192.168.88.8/ubuntu/ trusty-updates main restricted universe multiverse
deb-src http://192.168.88.8/ubuntu/ trusty-proposed main restricted universe multiverse
deb-src http://192.168.88.8/ubuntu/ trusty-backports main restricted universe multiverse

    jdk
    下載jdk-7u79-linux-x64.tar.gz拷貝過來即可
    java.sh
    設置java的環境變量，內容爲：

export JAVA_HOME=/opt/jdk1.7.0_79
export PATH=$JAVA_HOME/bin:$PATH
export CLASSPATH=$CLASSPATH:$JAVA_HOME/lib/

    Dockerfile
    最重要的，內容爲：

build the base image: jdk

this is the docker file, use the ubuntu 14.04

VERSION 1

Author: jthink

the basic image

FROM 192.168.xx.xx:5000/ubuntu:14.04

maintainer

MAINTAINER jthink [email protected]

copy the file

ADD ./sources.list /etc/apt
RUN apt-get update
RUN apt-get install tar
RUN apt-get install unzip
ADD ./jdk-7u79-linux-x64.tar.gz /opt
ADD ./java.sh /etc/profile.d

CMD to start

CMD /usr/sbin/sshd -D

        選擇基礎鏡像爲ubuntu:14.04
        將相關的文件拷貝至鏡像容器中的位置
        安裝相關的軟件
        設置java的環境變量
構建
執行命令
sudo docker build -t 192.168.xx.xx:5000/ubuntu:14.04-jdk7 .
sudo docker push 192.168.xx.xx:5000/ubuntu:14.04-jdk7
啓動
執行命令
sudo docker run -ti -d --name ubuntu-jdk7 192.168.xx.xx:5000/ubuntu:14.04-jdk7 /bin/bash

     進入容器驗證下是否有安裝的命令和java -version