What should I do if docker cannot delete the image?

Solution to the problem that docker cannot delete the image: 1. Delete REPOSITORY; 2. Delete IMAGE ID; 3. View the image through "docker images".

The operating environment of this article: centOS6.8 system, Docker version 18.09.x, Dell G3 computer.

What should I do if docker cannot delete the image?

How to solve the problem that the Docker Image cannot be deleted

Foreword

##Docker It is an open source container engine project based on lightweight virtualization technology by Docker.Inc. The entire project is developed based on Go language and complies with the Apache 2.0 protocol. Through layered image standardization and kernel virtualization technology, Docker enables application developers and operation and maintenance engineers to publish applications across platforms in a unified manner, and provides a resource-isolated application running environment with almost no additional overhead. Due to its many novel features and the openness of the project itself, Docker has quickly gained participation from many IT vendors in less than two years, including industry leaders such as Google, Microsoft, and VMware. At the same time, Docker has also stirred up waves in the developer community. Many coders like me have begun to pay attention to, learn and use Docker. Many companies, especially Internet companies, are also increasing their investment in Docker. Set off a container revolution.

Found the problem:

Image is one of the core technologies of Docker and is also the standard format for application release. Recently encountered a problem at work, the problem is as follows:

Error response from daemon: Conflict: cannot remove 4ac2d12f10cd (must be forced) - Image is referenced in multiple repositories

1. Delete the image

View the image

Delete failed

Delete one of the images, the image here has 1 repo reference, and no container uses it

And no container uses it

The image has 1 repo reference

2. Solution

Delete REPOSITORY

Deleted ImageID, there is 1 REPOSITORY name here Quote, the solution is as follows:

Specify the name when deleting, not the IMAGE ID.

Just delete the IMAGE ID:

3. View the mirror

Recommended study:《

docker video tutorial》

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