製做java基礎docker鏡像

參考文檔

https://www.jianshu.com/p/4143b5cef39f
https://www.cnblogs.com/niloay/p/6261784.html
https://blog.csdn.net/qq_35981283/article/details/80738451
https://cloud.tencent.com/developer/article/1188404
http://www.cnblogs.com/zhujingzhi/p/9746760.html#_label0

選擇底層操做系統
一般是從一個底層的操做系統來開始構建一個Docker鏡像的，也就是Dockerfile的FROM指令說起的。在某些狀況下，你也許會從一個已有的基礎鏡像開始，這時你已經選擇了底層操做系統鏡像。可是若是你須要選擇一個底層操做系統鏡像，那麼經常使用的鏡像和對應的大小以下所示：

REPOSITORY                                 TAG                 IMAGE ID            CREATED             SIZE
ubuntu                                     19.04               9b17fc7d6848        5 days ago          75.4MB
alpine                                     3.9                 055936d39205        10 days ago         5.53MB
busybox                                    latest              64f5d945efcc        11 days ago         1.2MB
centos                                     7.6.1810            f1cb7c7d58b7        2 months ago        202MB

製做基礎系統鏡像alpine、centos、ubuntu
注意：
全部基礎鏡像及部署軟件都要指定好具體版本，禁用last tag

• 下載alpine基礎鏡像

  [root@VM_8_24_centos ~]# docker pull alpine:v3.9
  Error response from daemon: manifest for alpine:v3.9 not found
  [root@VM_8_24_centos ~]# docker pull alpine:3.9
  3.9: Pulling from library/alpine
  Digest: sha256:769fddc7cc2f0a1c35abb2f91432e8beecf83916c421420e6a6da9f8975464b6
  Status: Downloaded newer image for alpine:3.9
  [root@VM_8_24_centos ~]# docker images
  REPOSITORY                    TAG                 IMAGE ID            CREATED             SIZE
  alpine                        3.9                 055936d39205        10 days ago         5.53MB

• 登錄私有鏡像庫

[root@VM_8_24_centos ~]# docker login core-harbor.minminmsn.com
Username: admin
Password: 
WARNING! Your password will be stored unencrypted in /root/.docker/config.json.
Configure a credential helper to remove this warning. See
https://docs.docker.com/engine/reference/commandline/login/#credentials-store

Login Succeeded

• 打標籤上傳到私有鏡像庫

  [root@VM_8_24_centos ~]# docker tag library/alpine:3.9  core-harbor.minminmsn.com/public/alpine:3.9
  [root@VM_8_24_centos ~]# docker push core-harbor.minminmsn.com/public/alpine:3.9
  The push refers to repository [core-harbor.minminmsn.com/public/alpine]
  f1b5933fe4b5: Pushed 
  3.9: digest: sha256:bf1684a6e3676389ec861c602e97f27b03f14178e5bc3f70dce198f9f160cce9 size: 528

• 一樣方法制做centos、ubuntu系統基礎鏡像

  [root@VM_8_24_centos ~]# docker images
  REPOSITORY                                 TAG                 IMAGE ID            CREATED             SIZE
  core-harbor.minminmsn.com/public/ubuntu   19.04               9b17fc7d6848        5 days ago          75.4MB
  ubuntu                                     19.04               9b17fc7d6848        5 days ago          75.4MB
  core-harbor.minminmsn.com/public/alpine   3.9                 055936d39205        10 days ago         5.53MB
  alpine                                     3.9                 055936d39205        10 days ago         5.53MB
  core-harbor.minminmsn.com/public/centos   7.6.1810            f1cb7c7d58b7        2 months ago        202MB
  centos                                     7.6.1810            f1cb7c7d58b7        2 months ago        202MB

在centos基礎鏡像上製做jre鏡像

• 下載jre包

  [work@VM_8_24_centos jre-centos]# wget https://github.com/frekele/oracle-java/releases/download/8u212-b10/jre-8u212-linux-x64.tar.gz
  [work@VM_8_24_centos jre-centos]# ls
  jre-8u212-linux-x64.tar.gz

• 編輯Dockerfile

[work@VM_8_24_centos jre-centos]# cat Dockerfile 
# 基礎鏡像
FROM core-harbor.minminmsn.com/public/centos:7.6.1810

# 維護信息
MAINTAINER minyt <minyongtao@minminmsn.com>

# 文件複製到鏡像
ADD jre-8u212-linux-x64.tar.gz /usr/local/

# 設置環境變量
ENV JAVA_HOME /usr/local/jre1.8.0_212
ENV PATH ${PATH}:${JAVA_HOME}/bin

# 容器啓動時運行的命令
CMD ["java", "-version"]

• 製做鏡像

  [root@VM_8_24_centos data]# cd jre-centos/
  [root@VM_8_24_centos jre-centos]# ls
  Dockerfile  jre-8u212-linux-x64.tar.gz
  [root@VM_8_24_centos jre-centos]# docker build -t core-harbor.minminmsn.com/public/jre-centos:1.8.0_212 .
  Sending build context to Docker daemon  87.89MB
  Step 1/6 : FROM core-harbor.minminmsn.com/public/centos:7.6.1810
  ---> f1cb7c7d58b7
  Step 2/6 : MAINTAINER minyt <minyongtao@minminmsn.com>
  ---> Using cache
  ---> d0fb7c193008
  Step 3/6 : ADD jre-8u212-linux-x64.tar.gz /usr/local/
  ---> 674cf9135825
  Step 4/6 : ENV JAVA_HOME /usr/local/jre1.8.0_212
  ---> Running in 1c4a7c7a19ad
  Removing intermediate container 1c4a7c7a19ad
  ---> ab2fc886e944
  Step 5/6 : ENV PATH ${PATH}:${JAVA_HOME}/bin
  ---> Running in 3107ba5ae7b9
  Removing intermediate container 3107ba5ae7b9
  ---> f14d2948c92d
  Step 6/6 : CMD ["java", "-version"]
  ---> Running in 99374bccaa27
  Removing intermediate container 99374bccaa27
  ---> f27d47159f1e
  Successfully built f27d47159f1e
  Successfully tagged core-harbor.minminmsn.com/public/jre-centos:1.8.0_212

• 查看鏡像

  [root@VM_8_24_centos jre-centos]# docker images 
  REPOSITORY                                     TAG                 IMAGE ID            CREATED             SIZE
  core-harbor.minminmsn.com/public/jre-centos   1.8.0_212           f27d47159f1e        17 seconds ago      441MB

• 上傳鏡像到私有鏡像庫

  [root@VM_8_24_centos jre-centos]# docker push core-harbor.minminmsn.com/public/jre-centos:1.8.0_212
  The push refers to repository [core-harbor.minminmsn.com/public/jre-centos]
  b9049811dc7d: Pushed 
  89169d87dbe2: Mounted from public/jdk-centos 
  1.8.0_212: digest: sha256:5c909a0c33aaa13b3a3ce48fd0f60356a32c5a697d99f39f08e92f1c6ba7bd57 size: 741

• 運行驗證jre鏡像

  [root@VM_8_24_centos jre-centos]# docker run core-harbor.minminmsn.com/public/jre-centos:1.8.0_212
  java version "1.8.0_212"
  Java(TM) SE Runtime Environment (build 1.8.0_212-b10)
  Java HotSpot(TM) 64-Bit Server VM (build 25.212-b10, mixed mode)