Dockerfile使用案例

• 创建包含jdk1.8和tomcat8的Dockerfile

#centos基础镜像
FROM centos:7.5.1804
 
# 在镜像里运行的命令
RUN mkdir -p /usr/java/jdk1.8.0_11 
  && mkdir -p /usr/java/apache-tomcat-8.5.60 
  && ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime 
  && yum install libnsl vim net-tools kde-l10n-Chinese reinstall glibc-common -y 
  && localedef -c -f UTF-8 -i zh_CN zh_CN.UTF-8 
  && echo 'LANG="zh_CN.UTF-8"' > /etc/locale.conf 
  && source /etc/locale.conf 
  && yum clean all 
# 将Dockerfile同目录下的jdk1.8.0_11文件复制到镜像中
ADD jdk1.8.0_11 /usr/java/jdk1.8.0_11
ADD apache-tomcat-8.5.60 /usr/java/apache-tomcat-8.5.60

RUN chmod +x /usr/java/jdk1.8.0_11/bin/* 
  && chmod +x /usr/java/apache-tomcat-8.5.60/bin/*
#添加环境变量
ENV JAVA_HOME=/usr/java/jdk1.8.0_11 
    CLASSPATH=$JAVA_HOME/lib/ 
    CATALINA_HOME=/usr/java/apache-tomcat-8.5.60 
    PATH=$PATH:$JAVA_HOME/bin:$CATALINA_HOME/bin 
    LANG=zh_CN.UTF-8 
    LC_ALL=zh_CN.UTF-8

EXPOSE 8080

CMD ["/usr/java/apache-tomcat-8.5.60/bin/catalina.sh","run"]

生成镜像

docker build -t 镜像名:TAG .

运行容器

docker run -e TZ="Asia/Shanghai" -it -d --name test 
-p 8082:8080 --restart=always 
-v /dir/test/tomcat/webapps:/usr/java/apache-tomcat-8.5.60/webapps 
-v /dir/test/tomcat/conf:/usr/java/apache-tomcat-8.5.60/conf 
-v /dir/test/tomcat/logs:/usr/java/apache-tomcat-8.5.60/logs 镜像名:TAG