前言
项目需要:
安装Dockeridea中安装docker插件,并配置docker一个SpringBoot项目创建Dockerfile
一、下载、安装、配置Docker下载Docker
下载地址:官网下载 Docker
安装
一直下一步就行
配置路径:Settings–General 勾选 Expose daemon on tcp://localhost:2375 without TLS
设置镜像,提高下载镜像的速度https://xaiqlt1z.mirror.aliyuncs.com
测试是否安装成功
C:\Users\msi>docker -v Docker version 19.03.12, build 48a66213fe C:\Users\msi> docker run hello-world Hello from Docker! This message shows that your installation appears to be working correctly. To generate this message, Docker took the following steps: 1. The Docker client contacted the Docker daemon. 2. The Docker daemon pulled the "hello-world" image from the Docker Hub. (amd64) 3. The Docker daemon created a new container from that image which runs the executable that produces the output you are currently reading. 4. The Docker daemon streamed that output to the Docker client, which sent it to your terminal. To try something more ambitious, you can run an Ubuntu container with: $ docker run -it ubuntu bash Share images, automate workflows, and more with a free Docker ID: https://hub.docker.com/ For more examples and ideas, visit: https://docs.docker.com/get-started/
二、Idea 安装Docker插件
1.安装docker插件在idea中: file--Plugins--Marketplace 搜索 Docker 安装
2.配置Docker服务
file – 搜索docker – 选择Docker – 右侧添加一个Docker
Connection successful 显示,表示 Docker链接成功
三、创建SpringBoot项目,修改pom.xmlspringMVC 项目,访问 localhost:8080/hello 显示 hello 字符串
@RequestMapping("/hello") @ResponseBody public String hello () { return "hello"; }
1.配置pom.xml 文件
<build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> <executions> <execution> <goals> <goal>repackage</goal> </goals> </execution> </executions> </plugin> <plugin> <groupId>com.spotify</groupId> <artifactId>docker-maven-plugin</artifactId> <version> 1.2.1</version> <executions> <execution> <id>build-image</id> <phase>package</phase> <goals> <goal>build</goal> </goals> </execution> </executions> <configuration> <imageName>${project.artifactId}</imageName> <imageTags> <imageTag>latest</imageTag> </imageTags> <dockerDirectory>${project.basedir}</dockerDirectory> <dockerHost>http://localhost:2375</dockerHost> <resources> <resource> <targetPath>/</targetPath> <directory>${project.build.directory}</directory> <include>${project.build.finalName}</include> </resource> </resources> </configuration> </plugin> </plugins> </build>
2.创建Docker 文件
在main文件夹下创建一个docker文件夹,并在里面创建一个Dockerfile文件。xxxxx.jar 是使用maven打包后复制进来的。
Dockerfile 文件内容:
# From java image, version : 8 FROM java:8 # 挂载app目录 VOLUME /app # COPY or ADD to image COPY demo-0.0.1-SNAPSHOT.jar app.jar RUN bash -c "touch /app.jar" EXPOSE 8080 ENTRYPOINT ["java", "-jar", "app.jar"]
maven打包,将其target目录下的jar包复制进docker目录下。
配置Dockerfile配置
运行
运行成功
测试
使用docker 检查容器是否启动:
测试项目是否启动:
总结
今天学了下Docker容器,基本的命令学会了,但是一直没弄懂怎么使用。借此机会就花费时间进行学习。目前只是会用,后面会补上步骤详细描述。
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