docker構建JDK最小鏡像

一、構建最小JDK

1、解壓jre

# mv jre-8u181-linux-x64.tar.gz java1.8.tar.gz
# tar -xvcf jre-8u181-linux-x64.tar.gz

2、刪除無用文件

# cd jre1.8.0_181/
# 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

3、重新打包

# tar acf java1.8.tar.gz java1.8

4、新建Dockerfile

# using alpine-glibc instead of alpine  is mainly because JDK relies on glibc
FROM docker.io/jeanblanchard/alpine-glibc
# author
MAINTAINER simon
# A streamlined jre
ADD java1.8.tar.gz /usr/java/jdk/
# set env
ENV JAVA_HOME /usr/java/jdk
ENV PATH ${PATH}:${JAVA_HOME}/bin
# run container with base path:/opt
WORKDIR /opt

5、構建docker鏡像

docker build -t simon/java8:1.0 .

　這樣構建的鏡像大概120M左右