1、安装Docker
yum install docker.x86_64
2、启动Docker
[root@~ /]# service docker start
Redirecting to /bin/systemctl start docker.service
3、 去docker 仓库查找image
[root@ ~]# docker search centos
INDEX NAME DESCRIPTION STARS OFFICIAL AUTOMATED
docker.io docker.io/centos The official build of CentOS. 3827 [OK]
docker.io docker.io/ansible/centos7-ansible Ansible on Centos7 103 [OK]
docker.io docker.io/jdeathe/centos-ssh CentOS-6 6.9 x86_64 / CentOS-7 7.4.1708 x8… 90 [OK]
docker.io docker.io/tutum/centos Simple CentOS docker image with SSH access 33
4、下载image 到本地
[root@ ~]# docker pull centos
5、查看刚刚下载下来的image
[root@ ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
docker.io/centos latest d123f4e55e12 2 weeks ago 196.6 MB
6、启动容器,放到后台,不退出,并查看启动的容器id
[root@ ~]# docker run -dt docker.io/centos /bin/bash
abe3a1f3063de369beb91d3679f11e5f61c0fad91e418022e9b868fb2632cb33
[root@smsgw1 ~]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
abe3a1f3063d docker.io/centos “/bin/bash” 9 seconds ago Up 8 seconds cocky_wozniak
7、进入容器
[root@ ~]# docker exec -ti abe3a1f3063d /bin/bash
8、进入容器后安装JDK 8
[root@abe3a1f3063d /]# yum install java-1.8.0-openjdk.x86_64
docker命令:
1、Ctrl+p+q (退出当前docker到宿主机)
2、docker images (查看宿主机中生成的docker镜像)
3、docker run –name {容器名} -p {宿主机端口}:{docker端口} –v {宿主机目录}:{docker日志目录} -d {镜像ID:latest} (创建并启动容器。)
4、docker ps (查看容器)
5、docker info (检查Docker的安装是否正确)
6、docker pull busybox (拉取一个预建的镜像)
7、docker help (所有Docker命令)
8、sudo systemctl enable docker (设置开机自启动)