一个包含python和java环境的dockerfile

现在一个项目中遇到python调用java的jar包的环境。为了方便发布，编写了这个dockerfile，作为基础镜像。

 #this docker file is used to build runtime environment.
 #The project is a python app which contains a java jar lib.
 FROM centos
 MAINTAINER mzyn22 <mzyn22@163.com>

 COPY ./requirements.txt /usr/local/src/requirements.txt
 # update software resource
 RUN yum -y install wget && \
     cd /etc/yum.repos.d/  && \
     mkdir bak  && \
     mv *.repo bak  && \
     wget http://mirrors.aliyun.com/repo/Centos-7.repo  && \
     wget http://mirrors.aliyun.com/repo/epel-7.repo  && \
     yum -y install zlib-devel bzip2-devel openssl-devel openssl-static ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel libffi-devel lzma gcc  && \
     yum -y groupinstall "Development tools"  && \
     yum -y install java-1.8.0-openjdk.x86_64  && \
     cd /usr/local/src/  && \
     wget https://www.python.org/ftp/python/3.7.0/Python-3.7.0.tar.xz  && \
     tar xvf Python-3.7.0.tar.xz  && \
     mv Python-3.7.0 /usr/local/python-3.7 && \
     cd /usr/local/python-3.7/ && \
     ./configure --prefix=/usr/local/sbin/python-3.7 && \
     make && make install && \
     rm -rf /usr/bin/python && \
     ln -sv /usr/local/sbin/python-3.7/bin/python3 /usr/bin/python && \
     ln -sv /usr/local/sbin/python-3.7/bin/python3 /usr/bin/python3 && \
     ln -sv /usr/local/sbin/python-3.7/bin/python3 /usr/bin/python37 && \
     sed -i 1s/python/python2.7/ /usr/bin/yum && \
     sed -i 1s/python/python2.7/ /usr/libexec/urlgrabber-ext-down && \
     sed -i 1s/python/python2.7/ /usr/bin/yum-config-manager && \

     sed -i '$a\JAVA_HOME=/usr/lib/jvm/jre-1.8.0-openjdk.x86_64' /etc/profile && \
     sed -i '$a\PATH=$PATH:$JAVA_HOME/bin' /etc/profile && \
     sed -i '$a\CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar' /etc/profile && \
     sed -i '$a\export JAVA_HOME CLASSPATH PATH' /etc/profile && \
     source /etc/profile && \
     ln -s /usr/local/sbin/python-3.7/bin/pip3 /usr/bin/pip && \
     pip install --upgrade pip

 RUN    pip install -r /usr/local/src/requirements.txt