dockerfile自动构建镜像

  构建一个镜像  

[root@ol85 ~]# mkdir dockerfile
[root@ol85 ~]# cd dockerfile/

 

FROM centos:7
RUN yum install epel-release -y  && \
yum install nginx -y

CMD ["nginx", "-g", "daemon off;"]

 

[root@ol85 dockerfile]# docker build -t nginx:v1 .

[root@ol85 dockerfile]# docker image ls      ==查看构建的镜像v1
REPOSITORY TAG IMAGE ID CREATED SIZE
nginx v1 106d261b8b9f About a minute ago 443MB

 

[root@ol85 ~]#  docker run -d --name web3 -p 90:80 -v /opt/wwwroot/:/usr/share/nginx/html nginx:v1