1.打包springBoot项目为demo.jar 以下贴上项目pom打包配置（使用idea的maven helper插件打包 ）

<?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>2.1.9.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.docker</groupId>
    <artifactId>demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>demo</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </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>
            <!-- maven install时跳过单元测试 -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-surefire-plugin</artifactId>
                <configuration>
                    <skipTests>true</skipTests>
                </configuration>
            </plugin>
        </plugins>
        <resources>
            <resource>
                <filtering>true</filtering>
                <directory>src/main/resources</directory>
                <excludes>
                    <exclude>**/*.yml</exclude>
                </excludes>
            </resource>
        </resources>
    </build>


</project>

2.打包完复制jar包和配置文件到服务器中 以下是目录结构

config ->application.yml

lib -> demo2.jar

dockerfile

 

 3.创建dockerfile

FROM openjdk:8-jdk-alpine
COPY ./config /usr/web/live/config 
COPY ./lib /usr/web/live/lib

EXPOSE 8080

ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom",\
"-jar",\
"-Dspring.config.location=/usr/web/live/config/application.yml",\
"/usr/web/live/lib/demo2.jar"]

4.创建镜像命令（记得用 sudo su获取最大权限操作）

docker build -t demo2 .

5.创建容器并运行

docker run --name demo2 -p 8035:8080 -d demo2

6.查看日志

 docker logs -f -t demo2

 

 效果演示