docker构建springboot镜像
先在Linux服务器安装docker
由于镜像现在访问不了，所以采用其它国内镜像的方法拉去镜像
直接运行该命令：
docker pull docker.1ms.run/library/openjdk:21
前面是镜像地址，可以替换的地址有：
https://docker.1ms.run 毫秒镜像 可用
https://docker.xuanyuan.me 轩辕镜像 可用
https://dislabaiot.xyz - 可用
https://docker.sunzishaokao.com 云港网络镜像 5.26不可用
https://hub.rat.dev 耗子面板 可用
https://doublezonline.cloud - 可用
https://dislabaiot.xyz - 可用
https://xdark.top - 可用
注意不要前面的https，library得有，看运气有时候能拉去下来
Idea点击maven中的build生成xxx.jar文件，将jar包复制到Linux系统中重命名为app.jar，写一个Dockerfile文件
注意文件名称就叫Dockerfile没有文件后缀，内容如下
FROM docker.1ms.run/library/openjdk:21WORKDIR /appCOPY app.jar app.jarEXPOSE 8080ENTRYPOINT ["java", "-jar", "/app/app.jar"]
在Dockerfile目录下运行命令构建镜像
docker build -t myjava .
看好命令最后面有个点，这个点不能没有
[root@localhost ~]# docker build -t myjava .
[+] Building 1.5s (8/8) FINISHED docker:default=> [internal] load build definition from Dockerfile 0.0s=> => transferring dockerfile: 233B 0.0s=> [internal] load metadata for docker.1ms.run/library/openjdk:21 0.0s=> [internal] load .dockerignore 0.0s=> => transferring context: 2B 0.0s=> [1/3] FROM docker.1ms.run/library/openjdk:21 0.0s=> [internal] load build context 0.0s=> => transferring context: 91B 0.0s=> [2/3] WORKDIR /app 0.0s=> [3/3] COPY app.jar app.jar 0.7s=> exporting to image 0.6s=> => exporting layers 0.6s=> => writing image sha256:f568f3d1d78eb15bf061c0f80b63b48815ce7dee46f2ff2e6ddc99a97db08565 0.0s=> => naming to docker.io/library/myjava 0.0s
[顺利的话直接构建成功
在docker中运行该Image
docker run -d -p 8080:8080 myjava:latest
使用docker logs看到日志输出，镜像构建成功！
. ____ _ __ _ _/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \\\/ ___)| |_)| | | | | || (_| | ) ) ) )' |____| .__|_| |_|_| |_\__, | / / / /=========|_|==============|___/=/_/_/_/:: Spring Boot :: (v3.4.7)2025-07-19T14:55:49.375Z INFO 1 --- [demo1] [ main] org.example.demo1.Demo1Application : Starting Demo1Application v0.0.1-SNAPSHOT using Java 21 with PID 1 (/app/app.jar started by root in /app)
2025-07-19T14:55:49.393Z INFO 1 --- [demo1] [ main] org.example.demo1.Demo1Application : The following 1 profile is active: "pro"
2025-07-19T14:55:55.771Z INFO 1 --- [demo1] [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port 8080 (http)
2025-07-19T14:55:55.865Z INFO 1 --- [demo1] [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2025-07-19T14:55:55.868Z INFO 1 --- [demo1] [ main] o.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/10.1.42]
2025-07-19T14:55:56.542Z INFO 1 --- [demo1] [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2025-07-19T14:55:56.556Z INFO 1 --- [demo1] [ main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 6788 ms
Logging initialized using 'class org.apache.ibatis.logging.stdout.StdOutImpl' adapter.
Get /172.17.0.2 network interface
Get network interface info: name:eth0 (eth0)
Initialization Sequence datacenterId:9 workerId:24_ _ |_ _ _|_. ___ _ | _
| | |\/|_)(_| | |_\ |_)||_|_\/ |3.5.12
2025-07-19T14:56:07.301Z INFO 1 --- [demo1] [ main] m.e.s.MybatisPlusApplicationContextAware : Register ApplicationContext instances org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@1722011b
2025-07-19T14:56:08.166Z INFO 1 --- [demo1] [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port 8080 (http) with context path '/'
2025-07-19T14:56:08.222Z INFO 1 --- [demo1] [ main] org.example.demo1.Demo1Application : Started Demo1Application in 21.389 seconds (process running for 23.923)
^C2025-07-19T15:03:00.791Z INFO 1 --- [demo1] [ionShutdownHook] o.s.b.w.e.tomcat.GracefulShutdown : Commencing graceful shutdown. Waiting for active requests to complete
浏览器访问http://192.168.68.29:8080/
访问成功！
还有好多细节：例如如果使用了mysql需要先运行mysql容器再启动springboot镜像，并且注意ip地址，如果想用mysql主机名需要指定网络alias。Linux服务器需要关闭防火墙或者放行8080端口等等。