Docker系列之实战：5.基于CentOS构建jdk环境

---

title: Docker系列之实战：5.基于CentOS构建jdk环境
categories: Docker
tags:
- Docker
timezone: Asia/Shanghai
date: 2019-02-19

---

环境

宿主机：
[root@centos181001 ~]# cat /etc/centos-release
CentOS Linux release 7.6.1810 (Core)

[root@centos181001 ~]# docker -v
Docker version 18.09.1, build 4c52b90

jdk-8u192-linux-x64.tar.gz

第一步：

1.下载CentOS镜像

docker pull centos:7.6.1810

2.准备jdk文件

mkdir jdk8u192_centos1810
cd jdk8u192_centos1810
tar -vxf jdk-8u192-linux-x64.tar.gz
mv jdk1.8.0_192/ jdk
rm -f jdk-8u192-linux-x64.tar.gz

3.编辑Dockerfile

vim Dockerfile
FROM centos:7.6.1810

COPY jdk /home/jdk

ENV JAVA_HOME=/home/jdk 
ENV CLASSPATH=.:${JAVA_HOME}/jre/lib/rt.jar:${JAVA_HOME}/lib/dt.jar:${JAVA_HOME}/lib/tools.jar
ENV PATH=$PATH:${JAVA_HOME}/bin

4.生成镜像

docker build --rm -t local/jdk8u192_centos1810:1.0 .

5.使用Image

#### 启动容器并进入容器
docker run --rm -it --name jdk_centos local/jdk8u192_centos1810:1.0
java -version

6.打包jar包进image

编辑Dockerfile

FROM centos:7.6.1810

COPY jdk /home/jdk
COPY pssc_sm_home-1.0.jar /home/
COPY pssc_sm_home.sh /home/

ENV JAVA_HOME=/home/jdk 
ENV CLASSPATH=.:${JAVA_HOME}/jre/lib/rt.jar:${JAVA_HOME}/lib/dt.jar:${JAVA_HOME}/lib/tools.jar
ENV PATH=$PATH:${JAVA_HOME}/bin

RUN chmod +x /home/pssc_sm_home.sh

##### 转发日志到docker log控制台
RUN ln -sf /dev/stdout /home/pssc_sm_home.log

CMD ["/home/pssc_sm_home.sh"]

编辑pssc_sm_home.sh

#!/bin/bash
java -jar -Xms1024m -Xmx1024m -Xss256k /home/pssc_sm_home-1.0.jar > /home/pssc_sm_home.log

生成Image

docker build --rm -t local/jdk8u192_centos1810 .

使用Image

docker run --name test -d local/jdk8u192_centos1810

查看实时日志

docker logs test -f