自动构建和部署

项目原因，我们决定使用一台服务器作为构建机并进行部署，现在先用最简单的方法实现

用crontab运行


构建脚本样例
```
#!/bin/bash
user=ubuntu
src=/data/git-rsync/project_name/
des=/data/www/project_name
host=xxx.xxx.xxx.xx
user=ubuntu
now=`date +"%Y-%m-%d %H:%M:%S"` 
cd $src
git fetch
git checkout master
state=`git pull origin master`
if [ "${state}" == "Already up-to-date." ]; then
    echo "nothing change"
    exit 0
fi
composer install
composer update
rsync -vzr --delete  --exclude ".git"  --exclude ".env"  --exclude "runtime/" --exclude "composer.lock"    $src  $user@$host:$des
ssh $user@$host "sudo chown -R www-data:ubuntu $des"
echo "$now update $host $des code" >> /tmp/log/git.log
```