【发版】java项目一键式发版，一键式发版脚本，如何实现一键式发版

0. 手动打包，jar包生产后

jenkins打包。

1. Dockerfile 文件：

FROM openjdk:8

MAINTAINER "维护者 "
RUN echo "Asia/Shanghai" > /etc/timezone

LABEL description="descr ... "
ADD xxx-1.0.0-SNAPSHOT.jar xxx.jar
EXPOSE 8099
ENTRYPOINT ["java","-XX:+UseContainerSupport","-XX:MaxRAMPercentage=75.0","-server","-XX:+UseG1GC","-XX:MaxGCPauseMillis=200","-Xmx1024m","-Xms1024m","-Xmn384m","-jar","-Dspring.profiles.active=gld","xxx.jar"]

2. startup.sh 启动脚本内容：

#!/bin/sh
echo "==================== start restart docker containers ====================="

APP_DIR=/root/saas/xxx

APP_NAME=xxx

APP_PORT=8099

VERSION=1.0.0-SNAPSHOT
 
cd $APP_DIR

## rm -f xxx-${VERSION}.jar
## cp /data/jenkins_home/workspace/xxx/target/xxx-${VERSION}.jar ./
## sleep 3s 

## 检查进程是否存在
PID=$(docker ps -a --filter name=$APP_NAME| grep -v "grep"|awk '{print $2}'|awk 'NR==2')
if [ "$PID" == "" ]; then
        echo "应用：$APP_NAME  容器不存在。"
else
        echo "应用：$APP_NAME  存在容器：$PID"
        
        docker stop  $PID
        docker rm $PID
        echo "容器：$PID 停止成功。"
        
        docker rmi $PID
        echo "镜像：$PID 停止成功。"
fi

echo "应用：$APP_NAME  正在启动..."

docker build -t $APP_NAME .
docker run -m 2g --name $APP_NAME -d -p $APP_PORT:$APP_PORT -v /etc/localtime:/etc/localtime -v /data/logs/saas/xxx/logs:/root/saas/xxx/logs --network host $APP_NAME 
echo "应用启动命令已执行，稍候请检查服务是否可用。"

echo "==================== end restart docker containers =========================="