docker打包，运行springboot

1. 创建src/main/docker/Dockerfile

2.Dockerfile内容为：

FROM frolvlad/alpine-oraclejdk8:slim
VOLUME /tmp
ADD demo_test-0.0.1-SNAPSHOT.jar app.jar
RUN sh -c 'touch /app.jar'
ENV JAVA_OPTS=""
ENTRYPOINT [ "sh", "-c", "java $JAVA_OPTS -Djava.security.egd=file:/dev/./urandom -jar /app.jar" ]

2：pom.xml代码为：

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.2.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>demo_test</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>demo_test</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>  
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <!--properties节点中设置docker镜像的前缀“springboot”-->  
        <docker.image.prefix>springboot</docker.image.prefix>
        <java.version>1.8</java.version>
        <maven-jar-plugin.version>3.1.1</maven-jar-plugin.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>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
            <!-- tag::plugin[] -->    
            <plugin>    
                <groupId>com.spotify</groupId>    
                <artifactId>docker-maven-plugin</artifactId>    
                <version>1.0.0</version>    
                <configuration>    
                    <imageName>test/demo_test</imageName>    
                    <dockerDirectory>src/main/docker</dockerDirectory>    
                    <resources>    
                        <resource>    
                            <targetPath>/</targetPath>    
                            <directory>${project.build.directory}</directory>    
                            <include>${project.build.finalName}.jar</include>    
                        </resource>    
                    </resources>    
                    <dockerHost>http://ip:2375</dockerHost>
                </configuration>    
            </plugin>    
            <!-- end::plugin[] -->  
        </plugins>
    </build>

</project>

3：执行eclipse mvn :  package docker:build

4:  生成镜像成功后，查看镜像

docker images

5. 查看所有容器

docker ps 

6. 运行springboot容器

docker fun -id -p 8080:8080 -t test/demo_test

7:重复生成镜像，导致有none，删除所有none镜像：

参考：http://blog.51yip.com/cloud/1859.html

$ docker stop $(docker ps -a | grep "Exited" | awk '{print $1 }')   //停止容器  

$ docker rm $(docker ps -a | grep "Exited" | awk '{print $1 }')    //删除容器

$ docker rmi $(docker images | grep "none" | awk '{print $3}')    //删除镜像