Docker体验（二） - 自建Image
2020-09-19 本文已影响0人
十毛tenmao
今天尝试把Spring Boot放到Docker中启动。
制作Spring Boot程序
- Spring Boot启动类
@RestController
@SpringBootApplication
public class HelloworldApplication {
public static void main(String[] args) {
SpringApplication.run(HelloworldApplication.class, args);
}
@GetMapping("ping")
public String ping() {
return "Hello World From Spring In Docker";
}
}
- 生成启动Jar
mvn clean package
# 生成
helloworld-0.0.1-SNAPSHOT.jar
- 编写Dockerfile
# 该 image 文件继承官方的 openjdk image，冒号表示标签，这里标签是8-jdk-alpine，即8-jdk-alpine版本的 openjdk
FROM openjdk:8-jdk-alpine
# 复制jar包围app.jar
COPY helloworld-0.0.1-SNAPSHOT.jar app.jar
# 入口命令
ENTRYPOINT ["java","-jar","/app.jar"]
- 放到同一个目录helleworld
E:\Workspace\docker\helloworld>dir
驱动器 E 中的卷是 Document
卷的序列号是 D42E-258E
E:\Workspace\docker\helloworld 的目录
2020/09/18 19:40 <DIR> .
2020/09/18 19:40 <DIR> ..
2020/09/18 19:42 108 Dockerfile
2020/09/18 19:35 18,339,476 helloworld-0.0.1-SNAPSHOT.jar
- 制作镜像
E:\Workspace\docker\helloworld>docker build -t tenmao/helloworld .
Sending build context to Docker daemon 18.34MB
Step 1/3 : FROM openjdk:8-jdk-alpine
8-jdk-alpine: Pulling from library/openjdk
e7c96db7181b: Pull complete f910a506b6cb: Pull complete c2274a1a0e27: Pull complete Digest: sha256:94792824df2df33402f201713f932b58cb9de94a0cd524164a0f2283343547b3
Status: Downloaded newer image for openjdk:8-jdk-alpine
---> a3562aa0b991
Step 2/3 : COPY helloworld-0.0.1-SNAPSHOT.jar app.jar
---> a93e33b2b838
Step 3/3 : ENTRYPOINT ["java","-jar","/app.jar"]
---> Running in b66e12cfae9a
Removing intermediate container b66e12cfae9a
---> 0a3b64bb0987
Successfully built 0a3b64bb0987
Successfully tagged tenmao/helloworld:latest
SECURITY WARNING: You are building a Docker image from Windows against a non-Windows Docker host. All files and directories added to build context will have '-rwxr-xr-x' permissions. It is recommended to double check and reset permissions for sensitive files and directories.
运行
- 启动命令
E:\Workspace\docker\helloworld>docker run -p 8080:8080 tenmao/helloworld
-
结果如下图
运行
