docker创建自己的镜像

#编写自己的dockerfile文件
[root@sunrui ~]# vim mydockerfile-centos
FROM centos
MAINTAINER sunrui

ENV MYPATH /usr/local
WORKDIR $MYPATH

RUN yum -y install vim 
RUN yum -y install net-tools

EXPOST 80

CMD echo $MYPATH
CMD echo "-----end-----"
CMD /bin/bash

#运行文件构建镜像
[root@sunrui ~]# docker build -f mydockerfile-centos -t mycentos:1.0 .

#测试运行
[root@sunrui ~]# docker run -it mycentos:1.0 /bin/bash
[root@53e421b6f2a5 local]# pwd
/usr/local