win10 下springcloud打包docker镜像部署。

1：建一个最简单的springcloud应用。

2:在根目录下新建dockerfile，文件如下：

FROM openjdk:8-jdk-alpine
VOLUME /tmp
ARG JAR_FILE
COPY ${JAR_FILE} app.jar
ENTRYPOINT ["java","-jar","/app.jar"]

3：pom.xml中填加依赖：

<?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>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.3.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.longdb</groupId>
    <artifactId>docker-demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>docker-demo</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>
        <java.version>1.8</java.version>
        <docker.image.prefix>longdbclass</docker.image.prefix>
    </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>
        <!--项目打包的名称-->
        <finalName>docker-demo</finalName>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
            <plugin>
                <groupId>com.spotify</groupId>
                <artifactId>dockerfile-maven-plugin</artifactId>
                <version>1.3.6</version>
                <configuration>
                    <repository>${docker.image.prefix}/${project.artifactId}</repository>
                    <buildArgs>
                        <JAR_FILE>target/${project.build.finalName}.jar</JAR_FILE>
                    </buildArgs>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

4：在idea下terminal下执行打包镜像指令：mvn install dockerfile:build 。成功后会返回镜像id,也可以在cmd中用docker -images指令看新打包的镜像id。我电脑上已经安装了docker for window.

5:运行打包好的springcloud项目。指令：docker run --name Test-v1.2 -d -p 9001:8080 3750bb60f76c

（Test-v1.2--为运行镜像时取的一个名称，-d 在后台运行， -p 端口映射，3750bb60f76c 镜像id）

6:在本机访问docker内的应用：http://localhost:9001/user/find

最基本的应用部署ok了，后面可能尝试下.net core webapi 部署到docker，本地docker镜像上传到腾讯云运行，本地docker镜像上传docker hub(https://www.cnblogs.com/longdb/p/10500891.html)。

最后感谢 永恒||承诺 兄弟的远程帮忙。