docker部署spring-boot应用

1、创建一个spring-boot应用

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>com.example</groupId>
  <artifactId>demo</artifactId>
  <version>0.0.1</version>
  <packaging>jar</packaging>

  <name>demo</name>
  <description>Demo project for Spring Boot</description>

  <parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.0.5.RELEASE</version>
    <relativePath/> <!-- lookup parent from repository -->
  </parent>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <java.version>1.8</java.version>
  </properties>

  <dependencies>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-web</artifactId>
    </dependency>

    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-test</artifactId>
      <scope>test</scope>
    </dependency>
  </dependencies>

  <build>
    <plugins>
      <plugin>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
      </plugin>
    </plugins>



  </build>


</project>

配置文件  application.properties

server.port=8777

启动类

package com.example.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/docker")
@SpringBootApplication
public class DemoApplication {

  public static void main(String[] args) {
    SpringApplication.run(DemoApplication.class, args);
  }

  @RequestMapping("/hello")
  public String hello(){
    return "hello";
  }
}

2、将应用打包、上传到服务器

在项目根目录下，执行  mvn clean compile package

在服务器输入 rz命令，上传。

3、编写Dockerfile文件

# 指定一个基础镜像centos
FROM docker.io/centos:latest

#安装应用执行的环境java
RUN yum -y install java

#将指定的jar文件复制到容器中
COPY demo-0.0.1.jar /usr/local/

#执行jar文件
ENTRYPOINT ["java" ,"-jar","/usr/local/demo-0.0.1.jar"]

4、创建容器

docker build -t demo:0.0.1 .

5、拉取镜像部署

docker run -d -p 8777:8777 demo:0.0.1