1：首先构建一个SpringBoot项目
只需要添加web依赖
2：编写一个controller用于测试
3：本机启动观察是否能够成功访问
4:打包
5：找到生成的jar包位置
6：jar包的启动运行测试
7:编写Dockerfile文件
8：把我们的jar包和Dockerfile文件上传服务器
9：利用上传的文件构建镜像
[root@iZwz9hv1phm24s3jicy8x1Z idea]# ls
Dockerfile Docker-Package-0.0.1-SNAPSHOT.jar
[root@iZwz9hv1phm24s3jicy8x1Z idea]# docker build -t dongmu-springboot-project .
Sending build context to Docker daemon 17.54MB
Step 1/5 : FROM java:8
8: Pulling from library/java
5040bd298390: Pull complete
fce5728aad85: Pull complete
76610ec20bf5: Pull complete
60170fec2151: Pull complete
e98f73de8f0d: Pull complete
11f7af24ed9c: Pull complete
49e2d6393f32: Pull complete
bb9cdec9c7f3: Pull complete
Digest: sha256:c1ff613e8ba25833d2e1940da0940c3824f03f802c449f3d1815a66b7f8c0e9d
Status: Downloaded newer image for java:8
---> d23bdf5b1b1b
Step 2/5 : COPY /*.jar /app.jar
---> a16d648390df
Step 3/5 : CMD ["--server.port=8080"]
---> Running in bc45f72484c7
Removing intermediate container bc45f72484c7
---> 713861b331ad
Step 4/5 : EXPOSE 8080
---> Running in 7a28e4939b5e
Removing intermediate container 7a28e4939b5e
---> 08f540832166
Step 5/5 : ENTRYPOINT ["java","-jar","/app.jar"]
---> Running in 6cd669cd522c
Removing intermediate container 6cd669cd522c
---> 1fd9f50df534
Successfully built 1fd9f50df534
Successfully tagged dongmu-springboot-project:latest
10：利用镜像运行容器
[root@iZwz9hv1phm24s3jicy8x1Z idea]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
dongmu-springboot-project latest 1fd9f50df534 About a minute ago 661MB
redis 5.0.9-alpine3.11 3661c84ee9d0 24 months ago 29.8MB
tomcat 9.0.22 c856951ade0a 2 years ago 624MB
java 8 d23bdf5b1b1b 5 years ago 643MB
[root@iZwz9hv1phm24s3jicy8x1Z idea]# docker run -d -P --name dongmu-springboot-web dongmu-springboot-project
c63282034de4e9dca727c93009e29f421bcd2544557a60b6339fa8056cc1d0d5
11：测试访问
[root@iZwz9hv1phm24s3jicy8x1Z idea]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
c63282034de4 dongmu-springboot-project "java -jar /app.jar …" 34 seconds ago Up 33 seconds 0.0.0.0:49166->8080/tcp, :::49166->8080/tcp dongmu-springboot-web
[root@iZwz9hv1phm24s3jicy8x1Z idea]# curl localhost 49166
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<title>Apache Tomcat/9.0.50</title>
<link href="favicon.ico" rel="icon" type="image/x-icon" />
<link href="tomcat.css" rel="stylesheet" type="text/css" />
</head>
......
访问成功上面是内部访问，下面我们重新启动利用外网进行访问
[root@iZwz9hv1phm24s3jicy8x1Z idea]# docker run -d -p 3344:8080 --name dongmu-springboot-web dongmu-springboot-project
35f3b4fe0f9a4b878d6566a9f4334fc98e7841b1fc5eb7869dd0044d4fb44d6d
欧克，外网访问成功。
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