docker-運維-共享宿主機的jdk

docker-運維-共享宿主機的jdk

準備

mkdir dc-jdk
cd dc-jdk

創建dockerfile

在 dc-jdk中創建 Dockerfile 文件:

FROM ubuntu:latest
ENV LANG C.UTF-8
# 指定容器內jdk所在目錄
ENV JAVA_HOME /opt/softinstall/jdk1.8.0_11
ENV CLASSPATH $JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
ENV PATH $PATH:$JAVA_HOME/bin:$JAVA_HOME/sbin

創建docker-compose.yml

在 dc-jdk中創建 docker-compose.yml 文件:

version: '3'
services:
  myjdk18:
    build:
      context: .
      dockerfile: Dockerfile
    volumes:
      # 將本地的jdk目錄/opt/softinstall/jdk1.8.0_11掛載到容器中
      # 本地jdk目錄:容器jdk目錄 
      - /opt/softinstall/jdk1.8.0_11:/opt/softinstall/jdk1.8.0_11
    command: java -version

構建鏡像

這一步很重要,每次修改了dockerfile 之後，都需要執行這個命令！！，坑死了都 >_>

$ docker-compose build

[root@bluesky dc-jdk]# docker-compose build
Building myjdk18
Step 1/5 : FROM ubuntu:latest
 ---> 775349758637
Step 2/5 : ENV LANG C.UTF-8
 ---> Using cache
 ---> 9d7b38a12294
Step 3/5 : ENV JAVA_HOME /opt/softinstall/jdk1.8.0_11
 ---> Using cache
 ---> 07da70072ae2
Step 4/5 : ENV CLASSPATH $JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
 ---> Using cache
 ---> f707d196f0fa
Step 5/5 : ENV PATH $PATH:$JAVA_HOME/bin:$JAVA_HOME/sbin
 ---> Using cache
 ---> 9d436adab128
Successfully built 9d436adab128
Successfully tagged dc-jdk_myjdk18:latestd

運行容器

$ docker-compose up

[root@bluesky dc-jdk]# docker-compose up
Creating dc-jdk_myjdk18_1 ... done
Attaching to dc-jdk_myjdk18_1
myjdk18_1  | java version "1.8.0_11"
myjdk18_1  | Java(TM) SE Runtime Environment (build 1.8.0_11-b12)
myjdk18_1  | Java HotSpot(TM) 64-Bit Server VM (build 25.11-b03, mixed mode)
dc-jdk_myjdk18_1 exited with code 0