java - Docker 使用添加的 Java 应用程序创建新镜像

Question

假设我想在 dockerfile/java(来自 DockerHub)之上分发一个 Docker 镜像，其中包含位于我的本地盒子中的可执行 Jar 文件。我该怎么做呢？

bash-3.2$ pwd /Users/czou/workspace/echodocker

bash-3.2$ cat Dockerfile

FROM dockerfile/java:latest

MAINTAINER X Y

ADD ../testing/echoservice-0.1.0-SNAPSHOT/ /data/echoservice

EXPOSE 8080

EXPOSE 8081

bash-3.2$ ls ../testing/echoservice-0.1.0-SNAPSHOT/

bin config lib

我们运行“docker build”，它总是给我:

../testing/echoservice-0.1.0-SNAPSHOT/:没有这样的文件或目录

文档要求构建上下文，它的真正含义是什么？我发现它很困惑......

Answer 1

Structure of java aplication

Demo
└── src
|    ├── main
|    │   ├── java
|    │   │   └── org
|    │   │       └── demo
|    │   │           └── .java
|    │   └── resources
|    │       └── application.properties
|    └── test
|         └── java
|               └── org
|                   └── demo
|                         └── App.java  
├──── Dockerfile
├──── pom.xml

Content of Dockerfile

FROM java:8
EXPOSE 8080
ADD /target/demo.jar demo.jar
ENTRYPOINT ["java","-jar","demo.jar"]

Commands to build and run image

• Go to the directory of project.Lets say D:/Demo

$ cd D/demo
$ mvn clean install
$ docker build demo .
$ docker run -p 8080:8080 -t demo

Check that container is running or not

$ docker ps

The output will be

CONTAINER ID        IMAGE               COMMAND                CREATED             STATUS              PORTS                    NAMES
55c11a464f5a        demo1               "java -jar demo.jar"   21 seconds ago      Up About a minute   0.0.0.0:8080->8080/tcp   cranky_mayer

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