Error response from daemon: No such image: ubuntu (tag: latest) right after after pulling from docker hub

Question

I had pulled the image ubuntu from the docker hub after a search using - sudo docker search ubuntu and pulled the image using sudo docker pull ubuntu. The command - sudo docker images were listing around 5 images related to ubuntu with different tags. The curious part is, I was not able to run the image - ubuntu with any of the tags available even with the default - latest tag..! The run command sudo docker run -it ubuntu bin/bash tries to pull the image again and finally ends up with the message: error response from daemon: No such image: ubuntu (tag: latest)

My Ubuntu version: 15.04 and my docker version details:

Client version: 1.5.0
Client API version: 1.17
Go version (client): go1.3.3
Git commit (client): a8a31ef
OS/Arch (client): linux/amd64
Server version: 1.5.0
Server API version: 1.17
Go version (server): go1.3.3
Git commit (server): a8a31ef

Please take a look at the image attached for more info.

Answer 1

As per the docker architecture, a docker image consists of various layers though for a user, it just combines and shows as a single image. While pulling/pushing to and from the docker hub, we can observe this layered concept as docker lists a number of files(in fact, various layers of the corresponding image) during push/pull operation.

For me, after pulling the image, docker somehow failed to update its image lists as a single un-tagged file and thus couldn't recognize images which I mentioned(ubuntu:latest).

A system restart updated the docker image list(combined the various layers to a single image) and thus solved the issue.