Dockerfile的一些demo

#继承用户创建的sshd镜像
FROM yatho:sshd_ubuntu

#创建者的基本信息
MAINTAINER yatho (yat_ho@163.com)

#设置环境变量，所有操作都是非交互式的
ENV DEBIAN_FRONTEND noninteractive

#系统时区设置
RUN echo "Asia/Shanghai" > /etc/timezone && \
dpkg-reconfigure -f noninteractive tedate

#安装跟tomcat用户认证相关的软件
RUN apt-get install -yq --no-install-recommends wget pwgen ca-certificates && \
apt-get clean && \
rm -rf /var/lib/apt/lists/*

#设置tomcat的环境变量，若读者有其他的环境变量需要设置，也可以添加
ENV CATALINA_HOME /tomcat
ENV JAVA_HOME /jdk

#复制tomcat和jdk文件到镜像中
ADD apache-tomcat-7.0.56 /tomcat
ADD JAVA_HOME /jdk

ADD create_tomcat_admin_user.sh /create_tomcat_admin_user.sh
ADD run.sh /run.sh
RUN chmod +x /*.sh
RUN chmod +x /tomcat/bin/*.sh

EXPOSE 8080
CMD ["/run.sh"]

#!/bin/bash

if [ -f /.tomcat_admin_created ]; then
echo "Tomcat 'admin' user already created"
exit 0
fi

#generate password
PASS=${TOMCAT_PASS:-$(pwgen -s 12 1)}
_word=$( [ ${TOMCAT_PASS} ] && echo "preset" || echo "random" )

echo "=> Creating and admin user with a ${_word} password in Tomcat"
sed -i -r 's/<\/tomcat-users>//' ${CATALINA_HOME}/conf/tomcat-users.xml
echo '<role rolename="manager-gui"/>' >> ${CATALINA_HOME}/conf/tomcat-users.xml
echo '<role rolename="manager-script"/>' >> ${CATALINA_HOME}/conf/tomcat-users.xml
echo '<role rolename="manager-jmx"/>' >> ${CATALINA_HOME}/conf/tomcat-users.xml
echo '<role rolename="admin-gui"/>' >> ${CATALINA_HOME}/conf/tomcat-users.xml
echo '<role rolename="admin-script"/>' >> ${CATALINA_HOME}/conf/tomcat-users.xml
echo "<user username=\"admin\" password=\"${PASS}\" roles=\"manager-gui,manager-script,manager-jmx,admin-gui, admin-script\"/>" >> ${CATALINA_HOME}/conf/tomcat-users.xml
echo '</tomcat-users>' >> ${CATALINA_HOME}/conf/tomcat-users.xml
echo "=> Done!"
touch /.tomcat_admin_created

echo "========================================================================"
echo "You can now configure to this Tomcat server using:"
echo ""
echo "    admin:${PASS}"
echo ""
echo "========================================================================"

#!/bin/bash

if [ ! -f /.tomcat_admin_created ]; then
/create_tomcat_admin_user.sh
fi
/usr/sbin/sshd -D &
exec ${CATALINA_HOME}/bin/catalina.sh run