查看系统版本

[root@dc02 ~]# cat /etc/redhat-release

CentOS Linux release 7.2.1511 (Core)

查看内核版本

[root@dc02 ~]# uname -r

3.10.0-327.el7.x86_64

关闭selinux和防火墙

setenforce 0

sed -i 's#SELINUX=enforcing#SELINUX=disabled#' /etc/selinux/configsystemctl disable firewalld.servicesystemctl stop firewalld.service

下载docker

[root@dc02 ~]# yum install -y docker

替换国内加速器

[root@dc02 ~]# cat >/etc/docker/daemon.json <<EOF

{

"registry-mirrors": [""]

}

EOF

[root@dc02 ~]# cat /etc/docker/daemon.json

{

"registry-mirrors": [""]

}

加载生效

[root@dc02 ~]# systemctl daemon-reload

自启动

[root@dc02 ~]# systemctl enable docker

[root@dc02 ~]# systemctl start docker

查看状态

[root@dc02 ~]# systemctl status docker

下载官方centos镜像

[root@dc02 ~]# docker pull centos

Using default tag: latestTrying to pull repository docker.io/library/centos ... latest: Pulling from docker.io/library/centos7dc0dca2b151: Pull complete Digest: sha256:b67d21dfe609ddacf404589e04631d90a342921e81c40aeaf3391f6717fa5322Status: Downloaded newer image for docker.io/centos:latest

查看所有下载镜像

[root@dc02 ~]# docker images

REPOSITORY TAG IMAGE ID CREATED SIZEdocker.io/centos latest 49f7960eb7e4 7 weeks ago 200 MB

启动并进入镜像

[root@dc02 ~]# docker run -it --name mynginx centos /bin/bash

安装常用命令

[root@9d76d200aae9 /]# yum install -y wget vim

[root@9d76d200aae9 /]# wget -O /etc/yum.repos.d/CentOS-Base.repo [root@9d76d200aae9 /]# wget -O /etc/yum.repos.d/epel.repo

安装nginx

[root@9d76d200aae9 /]# yum install -y nginx

#docker默认禁止后台运行nginx[root@9d76d200aae9 /]# vim /etc/nginx/nginx.conf#在"user nginx;"下面加上一行"daemon off;"

检查nginx配置文件语法

[root@9d76d200aae9 /]# nginx -t

启动nginx

[root@9d76d200aae9 /]# nginx

启动后命令行是夯筑的，所以打开一个新的SSH连接查看镜像

启动后命令行是夯筑的，所以打开一个新的SSH连接查看镜像

[root@dc02 ~]# docker ps

CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES9d76d200aae9 centos "/bin/bash" 14 minutes ago Up 14 minutes mynginx

提交镜像并查看

[root@dc02 ~]# docker commit -m "add new docker images" mynginx test/nginx:v1

sha256:5e28845136a33dc8e6175248086a90f9195dda4bdfc014a89b7ee32e37cc24d0[root@dc02 ~]# docker imagesREPOSITORY TAG IMAGE ID CREATED SIZEtest/nginx v1 5e28845136a3 About a minute ago 420 MBdocker.io/centos latest 49f7960eb7e4 7 weeks ago 200 MB

测试nginx连通性

[root@dc02 ~]# docker run -p 80:80 --name test_nginx 5e28845136a3 nginx

原文出处