Dockerfile构建SpringBoot镜像
简介
本示例使用Dockerfile 相关命令,和已经打好包(mvn -DskiptTests package
) 的SpringBoot 应用 在Docker服务器上构建镜像并启动的 简单示例。
编写Dockerfile文件
# 该镜像需要依赖的基础镜像
FROM java:8
# 将当前目录下的jar包复制到docker容器的/目录下
ADD dockerfile-example-0.0.1-SNAPSHOT.jar /app.jar
# 运行过程中更改 `app.jar` 文件的访问时间和修改时间
RUN bash -c 'touch /app.jar'
# 声明服务运行在8802端口
EXPOSE 8802
# 指定docker容器启动时运行jar包
ENTRYPOINT ["java", "-jar","/app.jar"]
# 指定维护者的名字
MAINTAINER tuonioooo
使用maven打包应用
使用idea maven插件打包

打包成功信息
INFO] --- spring-boot-maven-plugin:2.7.5:repackage (repackage) @ dockerfile-example ---
[WARNING] The POM for commons-codec:commons-codec:jar:1.11 is invalid, transitive dependencies (if any) will not be available, enable debug logging for more details
[WARNING] The POM for org.apache.commons:commons-lang3:jar:3.7 is invalid, transitive dependencies (if any) will not be available, enable debug logging for more details
[INFO] Replacing main artifact with repackaged archive
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 17.530 s
[INFO] Finished at: 2022-11-02T09:10:30+08:00
[INFO] ------------------------------------------------------------------------
Process finished with exit code 0
构建镜像
将Dockerfile、dockerfile-example-0.0.1-SNAPSHOT.jar 上传到Linux服务器上

在Dockerfile所在目录执行以下命令:
docker build -t my_dfile/dockerfile-example:0.0.1-SNAPSHOT .
[!NOTE]
-t
表示指定镜像仓库名称/镜像名称:镜像标签.
表示使用当前目录下的Dockerfile
输出如下信息:
Sending build context to Docker daemon 1.265GB
Step 1/6 : FROM java:8
---> d23bdf5b1b1b
Step 2/6 : ADD dockerfile-example-0.0.1-SNAPSHOT.jar /app.jar
---> 13f7c5c6e419
Step 3/6 : RUN bash -c 'touch /app.jar'
---> Running in 1ef18ec6b2f0
Removing intermediate container 1ef18ec6b2f0
---> c6f62bc623d1
Step 4/6 : EXPOSE 8802
---> Running in ef33d28ed325
Removing intermediate container ef33d28ed325
---> a71ef4fc90d0
Step 5/6 : ENTRYPOINT ["java", "-jar","/app.jar"]
---> Running in a132f902ceeb
Removing intermediate container a132f902ceeb
---> 05287fa1fb5c
Step 6/6 : MAINTAINER tuonioooo
---> Running in 1d9405f6c813
Removing intermediate container 1d9405f6c813
---> ce44f6e0bb51
Successfully built ce44f6e0bb51
Successfully tagged my_dfile/dockerfile-example:0.0.1-SNAPSHOT
查看镜像

启动
挂载日志目录
mkdir -p /mount/apps/dockerfile-example/logs
删除已存在的容器、和空悬镜像
docker stop dockerfile-01
docker rm dockerfile-01
docker rmi $(docker images -f "dangling=true" -q)
或
docker image prune
启动docker
docker run -p 8802:8802 --name dockerfile-01 \
-v /etc/localtime:/etc/localtime \
-v /mount/apps/dockerfile-example/logs:/logs \
-d my_dfile/dockerfile-example:0.0.1-SNAPSHOT
进行访问测试,地址:http://192.168.217.144:8802/swagger-ui.html

演示项目地址
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