自动化Maven项目打包并Docker部署

一、对项目进行容器化
在项目的根目录下新建一个名为 Dockerfile 的文件来定义Docker的镜像层

FROM openjdk:8-jdk-alpine
MAINTAINER best.fei <best.fei@good.com>
VOLUME /tmp
ADD remocker-0.0.1-SNAPSHOT.jar /ReMocker.jar
ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-jar","/ReMocker.jar"]

脚本解析
1、FROM openjdk:8-jdk-alpine 表示镜像是从 openjdk:8-jdk-alpin 继承而来的
2、VOLUME /tmp 表示挂载了 /tmp 目录到容器中，此目录为 Spring Boot 为 tomcat 创建的默认目录。
3、remocker-0.0.1-SNAPSHOT.jar /ReMocker.jar 表示从目录中把 remocker-0.0.1-SNAPSHOT.jar 包添加到镜像中，并重命名 ReMocker.jar
这步做的目的，会在下一段中说明
打出包的名称之所以叫remocker-0.0.1-SNAPSHOT.jar，是因为在pom.xml有如下配置

<artifactId>remocker</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>

4、ENTRYPOINT 在容器启动后执行 java 命令来运行程序

二、修改pom.xml
1、properties节点增加docker.image.prefix

<properties>
    <docker.image.prefix>qa</docker.image.prefix>
</properties>

2、增加docker build插件

<plugin>
    <groupId>com.spotify</groupId>
    <artifactId>docker-maven-plugin</artifactId>
    <version>1.1.1</version>
    <configuration>
      <imageName>${docker.image.prefix}/${project.artifactId}:latest</imageName>
      <dockerDirectory>${project.basedir}/</dockerDirectory>
      <resources>
        <resource>
        <targetPath>/</targetPath>
        <directory>${project.build.directory}</directory>
        <include>${project.build.finalName}.jar</include>
        </resource>
      </resources>
    </configuration>
</plugin>

三、最后编写shell脚本
完成自动编译 部署

#!/bin/bash
set -e
./mvnw clean package docker:build

docker_username=best.fei
docker_pwd=dockerPwd

docker_project=qa/remocker
docker_server_addr=harbor.best.fei.com
docker_tag=v1_0_0
docker_image=${docker_project}:latest

docker login -u${docker_username} -p${docker_pwd} ${docker_server_addr}
docker tag ${docker_image} ${docker_server_addr}/${docker_project}:${docker_tag}
docker push ${docker_server_addr}/${docker_project}:${docker_tag}

sshpass ssh bestfei@18.18.18.18 << eeooff

echo "========= docker stop ========="
docker ps -a  | grep "${docker_server_addr}/${docker_project}" | awk '{print \$1}'|xargs docker stop
echo "========= docker rm ========="
docker ps -a  | grep "${docker_server_addr}/${docker_project}" | awk '{print \$1}'|xargs docker rm
echo "========= docker rmi ========="
docker images | grep "${docker_server_addr}/${docker_project}"|awk '{print \$3}'|xargs docker rmi

docker login -u${docker_username} -p${docker_pwd} ${docker_server_addr}
docker pull ${docker_server_addr}/${docker_image}
docker run -p 8818:8080 -d --name remocker ${docker_server_addr}/${docker_image}

exit
eeooff