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利用Dockerfile制作java運(yùn)行環(huán)境的鏡像的方法步驟

當(dāng)前用到的環(huán)境是：

Centos 7.5
docker-ce 18.06.1-ce

1、先用centos7.5.1804的基礎(chǔ)鏡像把一些運(yùn)行需要的環(huán)境裝好

在/app目錄下創(chuàng)建相對(duì)應(yīng)的文件目錄

[root@node2 /app/]# mkdir dockerfile/{web/{nginx,tomcat,jdk,apache},system/{centos,ubuntu,redhat}} -pv
[root@node2 /app]# cd dockerfile/system/centos/
[root@node2 /app/dockerfile/system/centos]# mkdir centos-7.5-base
[root@node2 /app/dockerfile/system/centos]# cd centos-7.5-base

創(chuàng)建一個(gè)Dockerfile文件

[root@node2 /app/dockerfile/system/centos/centos-7.5-base]#vim Dockerfile 
#Nginx Base Image
FROM centos:7.5.1804

LABEL maintaier "mr.luo <mr.luo@dklwj.com>"

RUN yum install -y vim wget pcre pcre-devel zlib zlib-devel openssl openssl-devel iproute net-tools iotop

創(chuàng)建一個(gè)用于直接docker build腳本后續(xù)直接執(zhí)行腳本即可

[root@node2 /app/dockerfile/system/centos/centos-7.5-base]#vim build-command.sh 
#!/bin/bash
docker build -t 172.20.7.50/baseimages/centos-base:7.5.1804 .

執(zhí)行腳本創(chuàng)建新鏡像

[root@node2 /app/dockerfile/system/centos/centos-7.5-base]#bash build-command.sh 
Sending build context to Docker daemon 3.072kB
Step 1/3 : FROM centos:7.5.1804
---> 76d6bc25b8a5
Step 2/3 : LABEL maintaier 'mr.luo@dklwj.com'
---> Using cache
---> 05ccd970d71d
Step 3/3 : RUN yum install -y vim wget  pcre pcre-devel zlib zlib-devel openssl openssl-devel iproute net-tools iotop
---> Using cache
---> 73d683a54877
Successfully built 73d683a54877
Successfully tagged 172.20.7.50/baseimages/centos-base:7.5.1804

2、利用制作好的基礎(chǔ)環(huán)境鏡像制作jdk的鏡像

從centos-7.5-base退出來在當(dāng)前目錄創(chuàng)建一個(gè)jdk1.8的目錄.

[root@node2 /app/dockerfile/system/centos/centos-7.5-base]# cd ..
[root@node2 /app/dockerfile/system/centos]# mkdir jdk1.8
[root@node2 /app/dockerfile/system/centos]# cd jdk1.8/

創(chuàng)建Dockerfile

[root@node2 /app/dockerfile/system/centos/jdk1.8]#vim Dockerfile 
FROM 172.20.7.50/baseimages/centos-base:7.5.1804
LABEL maintainer "mr.luo <mr.luo@dklwj.com>"

ADD jdk-8u162-linux-x64.tar.gz /usr/local/src/
RUN ln -s /usr/local/src/jdk1.8.0_162/ /usr/local/jdk

ADD profile /etc/profile

ENV JAVA_HOME /usr/local/jdk
ENV JRE_HOME $JAVA_HOME/jre
ENV CLASSPATH $JAVA_HOME/lib/:$JRE_HOME/lib/
ENV PATH $PATH:$JAVA_HOME/bin

RUN rm -rf /etc/localtime && ln -snf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime && echo "Asia/Shanghai" > /etc/timezone

上傳jdk包到當(dāng)前目錄下：

復(fù)制/etc/profile文件到當(dāng)前目錄

[root@node2 /app/dockerfile/system/centos/jdk1.8]#cp profile /etc/profile

在profile最后添加jdk的環(huán)境變量

[root@node2 /app/dockerfile/system/centos/jdk1.8]#vim profile 
export JAVA_HOME=/usr/local/jdk
export TOMCAT_HOME=/apps/tomcat
export PATH=$JAVA_HOME/bin:$JAVA_HOME/jre/bin:$TOMCAT_HOME/bin:$PATH
export CLASSPATH=.$CLASSPATH:$JAVA_HOME/lib:$JAVA_HOME/jre/lib:$JAVA_HOME/lib/tools.jar

創(chuàng)建docker build的shell腳本

[root@node2 /app/dockerfile/system/centos/jdk1.8]#vim build-command.sh 
#!/bin/bash
#
docker build -t 172.20.7.50/baseimages/centos7.5-jdk:8.162 .

開始制作鏡像

[root@node2 /app/dockerfile/system/centos/jdk1.8]#bash build-command.sh 
  Sending build context to Docker daemon 189.8MB
  Step 1/10 : FROM 172.20.7.50/baseimages/centos-base:7.5.1804
   ---> 73d683a54877
  Step 2/10 : LABEL maintainer "mr.luo <mr.luo@dklwj.com>"
   ---> Running in 65604dd1f392
  Removing intermediate container 65604dd1f392
   ---> c4720603ce38
  Step 3/10 : ADD jdk-8u162-linux-x64.tar.gz /usr/local/src/
   ---> bc98adffe1b4
  Step 4/10 : RUN ln -s /usr/local/src/jdk1.8.0_162/ /usr/local/jdk
   ---> Running in df5a6f67f9fd
  Removing intermediate container df5a6f67f9fd
   ---> 0ae1af0416c6
  Step 5/10 : ADD profile /etc/profile
   ---> eee23a69c0c8
  Step 6/10 : ENV JAVA_HOME /usr/local/jdk
   ---> Running in edbef8563e83
  Removing intermediate container edbef8563e83
   ---> 5f783f642054
  Step 7/10 : ENV JRE_HOME $JAVA_HOME/jre
   ---> Running in fa0e5f08e732
  Removing intermediate container fa0e5f08e732
   ---> 28a4d31463d4
  Step 8/10 : ENV CLASSPATH $JAVA_HOME/lib/:$JRE_HOME/lib/
   ---> Running in 3c4ebb04ac62
  Removing intermediate container 3c4ebb04ac62
   ---> 245f2dd82d52
  Step 9/10 : ENV PATH $PATH:$JAVA_HOME/bin
   ---> Running in 4f5e6093f0a9
  Removing intermediate container 4f5e6093f0a9
   ---> 5be0e6261eea
  Step 10/10 : RUN rm -rf /etc/localtime && ln -snf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime && echo "Asia/Shanghai" > /etc/timezone
   ---> Running in 52d8cb8463a8
  Removing intermediate container 52d8cb8463a8
   ---> 9fb867ae8c39
  Successfully built 9fb867ae8c39
  Successfully tagged 172.20.7.50/baseimages/centos7.5-jdk:8.162

查看當(dāng)前目錄下的文件

[root@node2 /app/dockerfile/system/centos/jdk1.8]#ls
build-command.sh Dockerfile jdk-8u162-linux-x64.tar.gz profile

檢查制作好的鏡像是否能正常使用

[root@node2 /app/dockerfile/system/centos/jdk1.8]#docker run -it --rm 172.20.7.50/baseimages/centos7.5-jdk:8.162 bash
[root@919844b164dc /]# java -version 
java version "1.8.0_162"
Java(TM) SE Runtime Environment (build 1.8.0_162-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.162-b12, mixed mode)
[root@919844b164dc /]# date
Thu Nov 22 21:17:49 CST 2018
[root@919844b164dc /]# exit
exit

3、做Tomcat的鏡像

進(jìn)入之前建好的/app/dockerfile/web/tomcat下,創(chuàng)建一個(gè)tomcat-base目錄

[root@node2 ~]# cd /app/dockerfile/web/tomcat 
[root@node2 /app/dockerfile/web/tomcat]#mkdir tomcat-base

創(chuàng)建Dockerfile

[root@node2 /app/dockerfile/web/tomcat/tomcat-base]#vim Dockerfile 
FROM 172.20.7.50/baseimages/centos7.5-jdk:8.162

LABEL maintainer "mr.luo <mr.luo@dklwj.com>"

RUN mkdir /apps
ADD apache-tomcat-8.5.33.tar.gz /apps
RUN ln -s /apps/apache-tomcat-8.5.33 /apps/tomcat

創(chuàng)建docker build腳本

[root@node2 /app/dockerfile/web/tomcat/tomcat-base]#vim build-command.sh 
#!/bin/bash

docker build -t 172.20.7.50/baseimages/centos-tomcat:8.5.33 .

執(zhí)行創(chuàng)建鏡像文件：

[root@node2 /app/dockerfile/web/tomcat/tomcat-base]#bash build-command.sh 
  Sending build context to Docker daemon 9.625MB
  Step 1/5 : FROM 172.20.7.50/baseimages/centos7.5-jdk:8.162
   ---> 9fb867ae8c39
  Step 2/5 : LABEL maintainer "mr.luo <mr.luo@dklwj.com>"
   ---> Running in 9ce6fc4d2850
  Removing intermediate container 9ce6fc4d2850
   ---> b68755061b28
  Step 3/5 : RUN mkdir /apps
   ---> Running in b483c6b127f2
  Removing intermediate container b483c6b127f2
   ---> 605c1a048a5f
  Step 4/5 : ADD apache-tomcat-8.5.33.tar.gz /apps
   ---> 3c44f96ed41c
  Step 5/5 : RUN ln -s /apps/apache-tomcat-8.5.33 /apps/tomcat
   ---> Running in 4c1aa39a6c92
  Removing intermediate container 4c1aa39a6c92
   ---> 9b3bc4f58cc9
  Successfully built 9b3bc4f58cc9
  Successfully tagged 172.20.7.50/baseimages/centos-tomcat:8.5.33

利用創(chuàng)建好的鏡像起一個(gè)容器檢查下是否成功制作好，啟動(dòng)時(shí)加上-p暴露端口，在物理機(jī)上測(cè)試下

[root@node2 /app/dockerfile/web/tomcat/tomcat-base]#docker run -it -p 8802:8080 172.20.7.50/baseimages/centos-tomcat:8.5.33 bash  
[root@917b2c2262a3 /]# cd /apps/
[root@917b2c2262a3 apps]# ll
total 0
drwxr-xr-x 9 root root 220 Nov 22 22:08 apache-tomcat-8.5.33
lrwxrwxrwx 1 root root 26 Nov 22 22:08 tomcat -> /apps/apache-tomcat-8.5.33
[root@917b2c2262a3 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.

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