从JDK镜像构建tomcat 8 Base镜像

基于自定义的 JDK 基础镜像，构建出通用的自定义 Tomcat 基础镜像，此镜像后
期会被多个业务的多个服务共同引用(相同的JDK 版本和Tomcat 版本)

上传tomcat 压缩包

[root@ubuntu1804 ~]#mkdir -p /data/dockerfile/web/tomcat/tomcat-base-8.5.50
[root@ubuntu1804 ~]#cd /data/dockerfile/web/tomcat/tomcat-base-8.5.50
[root@ubuntu1804 tomcat-base-8.5.50]#
wget http://mirrors.tuna.tsinghua.edu.cn/apache/tomcat/tomcat-8/v8.5.50/bin/apache-tomcat-8.5.50.tar.gz

编辑Dockerfile

[root@ubuntu1804 ~]#cat /data/dockerfile/web/tomcat/tomcat-base-8.5.50/Dockerfile 
#Tomcat Base Image 
FROM centos7-jdk:8u212 
LABEL maintainer="wangxiaochun <root@wangxiaochun.com>"
#env 
ENV TZ "Asia/Shanghai" 
ENV LANG en_US.UTF-8 
ENV TERM xterm 
ENV TOMCAT_MAJOR_VERSION 8 
ENV TOMCAT_MINOR_VERSION 8.5.50 
ENV CATALINA_HOME /apps/tomcat 
ENV APP_DIR ${CATALINA_HOME}/webapps 

RUN mkdir /apps  
ADD apache-tomcat-8.5.50.tar.gz /apps   
RUN ln -s /apps/apache-tomcat-8.5.50 /apps/tomcat

通过脚本构建tomcat 基础镜像

[root@ubuntu1804 tomcat-base-8.5.50]#vim  build.sh 
[root@ubuntu1804 tomcat-base-8.5.50]#cat build.sh 
#!/bin/bash
docker build -t tomcat-base:v8.5.50 .

[root@ubuntu1804 tomcat-base-8.5.50]#tree
.
├── apache-tomcat-8.5.50.tar.gz
├── build.sh
└── Dockerfile

0 directories, 3 files

[root@ubuntu1804 tomcat-base-8.5.50]#docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
tomcat-base         v8.5.50             8d5395cb72c4        3 seconds ago       824MB
centos7-jdk         8u212               e0fe770a7ccd        22 minutes ago      809MB
centos7-base        v1                  34ab3afcd3b3        2 hours ago         403MB
centos              centos7.7.1908      08d05d1d5859        2 months ago        204MB

验证镜像构建完成

[root@ubuntu1804 tomcat-base-8.5.50]#docker run -it --rm -p 8080:8080  tomcat-base:v8.5.50 bash   
[root@d0a387e0ccc9 /]# /apps/tomcat/bin/catalina.sh start
Using CATALINA_BASE:   /apps/tomcat
Using CATALINA_HOME:   /apps/tomcat
Using CATALINA_TMPDIR: /apps/tomcat/temp
Using JRE_HOME:        /usr/local/jdk/jre
Using CLASSPATH:       /apps/tomcat/bin/bootstrap.jar:/apps/tomcat/bin/tomcat-juli.jar
Tomcat started.
[root@d0a387e0ccc9 /]# netstat -ntl
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State      
tcp        0      0 0.0.0.0:8009            0.0.0.0:*               LISTEN     
tcp        0      0 0.0.0.0:8080            0.0.0.0:*               LISTEN     
[root@d0a387e0ccc9 /]# 

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