Docker Hub可以通過其搜索界面或命令行界面搜索Docker Hub注冊表。搜索可以按鏡像名稱，用戶名或描述找到鏡像：

$ docker search centos

NAME DEscriptION STARS OFFICIAL AUTOMATED

centos The official build of CentOS. 1034 [OK]

ansible/centos7-ansible Ansible on Centos7 43 [OK]

tutum/centos Centos image with SSH access. For the root... 13 [OK]

...

在那里，您可以看到兩個示例結(jié)果：centos和ansible/centos7-ansible。第二個結(jié)果顯示它來自名為的用戶的公共存儲庫ansible/，而第一個結(jié)果centos沒有顯式列出存儲庫，這意味著它來自官方映像的頂級命名空間 。該/字符將用戶的存儲庫與映像名稱分開。

找到所需的鏡像后，可以通過以下方式下載docker pull：

$ docker pull centos

latest: Pulling from centos

6941bfcbbfca: Pull complete

41459f052977: Pull complete

fd44297e2ddb: Already exists

centos:latest: The image you are pulling has been verified. important: image verification is a tech preview feature and should not be relied on to provide security.

Digest: sha256:d601d3b928eb2954653c59e65862aabb31edefa868bd5148a41fa45004c12288

Status: Downloaded newer image for centos:latest

現(xiàn)在，您有了一個可以運(yùn)行容器的映像。