springboot项目打docker镜像实例(入门级)

<?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.bear.big</groupId>
    <artifactId>Forest</artifactId>
    <version>1.0-SNAPSHOT</version>
    <properties>
        <start-class>com.bear.big.Boss</start-class>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <version>2.6.1</version>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <executions>
                    <execution>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                    </execution>
                </executions>
                <configuration>
                    <mainClass>${start-class}</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

server:
  port: 8080

package com.bear.big;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

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

package com.bear.big.controller;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class TestController {
    @GetMapping("/cut")
    public String cut(){
        return "tree";
    }
}

mvn clean install

FROM ubuntu:18.04
LABEL author=jiyijiqi

# 安装jdk
ADD jdk-8u311-linux-x64.tar.gz /usr/local/java
RUN ln -s /usr/local/java/jdk1.8.0_311 /usr/local/java/jdk
ENV JAVA_HOME /usr/local/java/jdk
ENV JRE_HOME ${JAVA_HOME}}/jre
ENV CLASSPATH .:${JAVA_HOME}/lib:${JRE_HOME}/lib
ENV PATH ${JAVA_HOME}/bin:$PATH

# 工作目录
WORKDIR /workspace
# 拷贝jar包
COPY Forest-1.0-SNAPSHOT.jar /workspace
# 声明暴露端口
EXPOSE 8080
# 容器启动的默认命令
CMD ["java","-jar","Forest-1.0-SNAPSHOT.jar"]

docker build -t forest:1.0 .

docker images

docker run -it --rm -p 8080:8080 forest:1.0

docker run -itd --rm -p 8080:8080 forest:1.0

 docker tag forest:1.0 bearbigk/aaaa:1.0

docker login

docker push bearbigk/aaaa:1.0

docker pull bearbigk/aaaa:1.0