docker

Posted 2020-10-29

通过模板创建镜像

模板下载地址

http://openvz.org/Download/templates/precreated

下载 centos-6-x86-minimal.tar.gz

[[email protected] ~]# curl -O http://download.openvz.org/template/precreated/centos-6-x86-minimal.tar.gz

导入镜像

[[email protected] ~]# cat centos-6-x86-minimal.tar.gz |docker import - centos-6
sha256:d1b29eff72b9f7ae2762b71ebc64485e7ae9c1d36c9a1c5fc39e7cbac0cd3ec2

查看镜像

[[email protected] ~]# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED              SIZE
centos-6            latest              d1b29eff72b9        About a minute ago   512MB
new_centos          latest              6618fdb3c813        About an hour ago    358MB
centos              latest              e934aafc2206        8 hours ago          199MB
ubuntu              latest              f975c5035748        4 weeks ago          112MB

将镜像centos-6启动为容器，进入到容器中，查看运行平台

[[email protected] ~]# docker run -itd centos-6 bash
a038f9b57652886ac288fe33b93c25f39eed6f6ff4d5e71b1d4d4928ffceca07
[[email protected] ~]# docker exec -it a038f9b57652 bash
[[email protected] /]# uname -r
3.10.0-693.el7.x86_64

导出镜像

[[email protected] ~]# docker save -o centos.tar centos

删除镜像，导入镜像

[[email protected] ~]# docker rmi centos
[[email protected] ~]# docker load --input centos.tar 或 docker load < centos.tar

把镜像上传到dockerhub官方，需要先注册一个用户

# docker push image_name