Docker安装

Docker安装并启动

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[root@docker ~]# yum install -y docker
[root@docker ~]# systemctl start docker

Docker测试

        从docker.com获取centos镜像 docker pull centosget

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[root@docker ~]# docker pull centos 
Using default tag: latest
Trying to pull repository docker.io/library/centos ... 
latest: Pulling from docker.io/library/centos
45a2e645736c: Pull complete 
Digest: sha256:c577af3197aacedf79c5a204cd7f493c8e07ffbce7f88f7600bf19c688c38799
Status: Downloaded newer image for docker.io/centos:latest

         docker images 查看本地都有哪些镜像

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[root@docker ~]# docker images
REPOSITORY       TAG    IMAGE ID     CREATED       SIZE
docker.io/centos latest 67591570dd29 5 weeks ago   191.8 MB

        使用在下镜像开启容器

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         docker ps 查看运行的容器，加上 -a 选项可以查看有没有运行的容器

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[root@docker ~]# docker ps -a
CONTAINER ID IMAGE   COMMAND     CREATED       STATUS                         PORTS NAMES
6e35c7590c0e centos  "/bin/bash" 2 minutes ago Exited (0) About a minute ago        desperate_jepsen