docker运行tomcat
首先docker pull tomcat，从docker的仓库中拉取tomcat的镜像。
然后从镜像启动容器docker run -p 8081:8080 tomcat
docker run -p 3306:3306 --name mysql -v $PWD/mysql/conf:/etc/mysql/conf.d -v $PWD/mysql/logs:/logs -v $PWD/mysql/data:/var/lib/mysql -e MYSQL_ROOT_PASSWORD=root -d mysql:5.6
docker run --name tomcat -p 8080:8080 -v $PWD/test:/usr/local/tomcat/webapps/test -d tomcat