yum install docker

[root@microservice ~]# vim /usr/lib/systemd/system/docker.service

systemctl daemon-reload
systemctl start docker

<build>
  <finalName>${project.artifactId}</finalName>
  <plugins>
    <plugin>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-maven-plugin</artifactId>
      <configuration>
        <fork>true</fork>
      </configuration>
    </plugin>
    <!-- 跳过单元测试 -->
    <plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-surefire-plugin</artifactId>
      <configuration>
        <skipTests>true</skipTests>
      </configuration>
    </plugin>
    <!--使用docker-maven-plugin插件-->
    <plugin>
      <groupId>com.spotify</groupId>
      <artifactId>docker-maven-plugin</artifactId>
      <version>1.0.0</version>
      <!--将插件绑定在某个phase执行-->
      <executions>
        <execution>
          <id>build-image</id>
          <!--用户只需执行mvn package ，就会自动执行mvn docker:build-->
          <phase>package</phase>
          <goals>
            <goal>build</goal>
          </goals>
        </execution>
      </executions>
      <configuration>
        <!--指定生成的镜像名-->
        <imageName>fred/${project.artifactId}</imageName>
        <!--指定标签-->
        <imageTags>
          <imageTag>latest</imageTag>
        </imageTags>
        <!-- 指定 Dockerfile 路径-->
        <dockerDirectory>src/main/docker</dockerDirectory>
        <!--指定远程 docker api地址-->
        <dockerHost>http://服务器ip地址:2375</dockerHost>
        <!-- 这里是复制 jar 包到 docker 容器指定目录配置 -->
        <resources>
          <resource>
            <targetPath>/</targetPath>
            <!--jar 包所在的路径 此处配置的 即对应 target 目录-->
            <directory>${project.build.directory}</directory>
            <!-- 需要包含的 jar包 ，这里对应的是 Dockerfile中添加的文件名 -->
            <include>${project.build.finalName}.jar</include>
          </resource>
        </resources>
      </configuration>
    </plugin>
  </plugins>
</build>

# Dockerfile
# 基于的镜像
FROM openjdk:8-jdk-alpine
 
VOLUME /opt/tmp
 
ADD sg-business.jar app.jar
 
# -Djava.security.egd=file:/dev/./urandom 可解决tomcat可能启动慢的问题
# 具体可查看：https://www.cnblogs.com/mightyvincent/p/7685310.html
ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-jar","/app.jar"]
 
# 对外端口
EXPOSE 8081