问题
openjdk 而oracle jdk 有些情况下并不兼容;openjdk 镜像只有一百兆,但是oracle jdk 搜到的镜像都很大。
步骤
- 下载最新的oracle jre 8
https://javadl.oracle.com/webapps/download/AutoDL?BundleId=242050_3d5a2bb8f8d4428bbe94aed7ec7ae784
- 上传到
linux 并解压
[root@node1 jdk8]# tar -xvzf jre-8u251-linux-x64.tar.gz
[root@node1 jdk8]# pwd
/root/jdk8
[root@node1 jdk8]# ll
总用量 85492
drwxr-xr-x 5 10143 10143 76 7月 9 14:04 jre1.8.0_251
-rw-r--r-- 1 root root 87543611 7月 9 13:55 jre-8u251-linux-x64.tar.gz
- 删除一些说明文档和无用包
[root@node1 jdk8]# cd jre1.8.0_251/
rm -rf COPYRIGHT LICENSE README release THIRDPARTYLICENSEREADME-JAVAFX.txt THIRDPARTYLICENSEREADME.txt Welcome.html
rm -rf lib/plugin.jar lib/ext/jfxrt.jar bin/javaws lib/javaws.jar lib/desktop plugin lib/deploy* lib/*javafx* lib/*jfx* lib/amd64/libdecora_sse.so lib/amd64/libprism_*.so lib/amd64/libfxplugins.so lib/amd64/libglass.so lib/amd64/libgstreamer-lite.so lib/amd64/libjavafx*.so lib/amd64/libjfx*.so
[root@node1 jre1.8.0_251]# ll
总用量 4
drwxr-xr-x 2 10143 10143 208 7月 9 13:56 bin
drwxr-xr-x 13 10143 10143 4096 7月 9 13:56 lib
drwxr-xr-x 4 10143 10143 47 3月 12 14:33 man
- 重新资源
[root@node1 jre1.8.0_251]# tar zcvf jre8.tar.gz *
[root@node1 jre1.8.0_251]# ll
总用量 43896
drwxr-xr-x 2 10143 10143 208 7月 9 13:56 bin
-rw-r--r-- 1 root root 44942683 7月 9 14:04 jre8.tar.gz
drwxr-xr-x 13 10143 10143 4096 7月 9 13:56 lib
drwxr-xr-x 4 10143 10143 47 3月 12 14:33 man
- 直接在当前目录下创建
Dockerfile
[root@node1 jre1.8.0_251]# vim Dockerfile
编写Dockerfile
FROM docker.io/jeanblanchard/alpine-glibc
MAINTAINER wuzhiyong
ADD jre8.tar.gz /usr/java/jdk/
ENV JAVA_HOME /usr/java/jdk
ENV PATH ${PATH}:${JAVA_HOME}/bin
WORKDIR /opt
- 生成镜像
# 生成镜像
[root@node1 jre1.8.0_251]# docker build -t wuzhiyong/java8.0_251 .
Sending build context to Docker daemon 161.1MB
Step 1/6 : FROM docker.io/jeanblanchard/alpine-glibc
---> c1bfe6541128
Step 2/6 : MAINTAINER wuzhiyong
---> Using cache
---> 5e4699308c35
Step 3/6 : ADD jre8.tar.gz /usr/java/jdk/
---> 8b6b66ec0f68
Step 4/6 : ENV JAVA_HOME /usr/java/jdk
---> Running in 26f286188aa8
Removing intermediate container 26f286188aa8
---> 7d1501133f4c
Step 5/6 : ENV PATH ${PATH}:${JAVA_HOME}/bin
---> Running in 418be370f8b9
Removing intermediate container 418be370f8b9
---> 8a920d8285df
Step 6/6 : WORKDIR /opt
---> Running in 107687a0007d
Removing intermediate container 107687a0007d
---> e7a62387e585
Successfully built e7a62387e585
Successfully tagged wuzhiyong/java8.0_251:latest
#查看镜像大小
[root@node1 jre1.8.0_251]# docker images | grep java8
wuzhiyong/java8.0_251 latest e7a62387e585 15 seconds ago 133MB
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