Docker image prune. why does docker prune not remove my dangling images? 2018-09-30

Docker image prune Rating: 7,6/10 1716 reviews

How to remove old Docker containers

docker image prune

Broken is the wrong word for it. You can use more than one filter by passing multiple --filter flags. This will remove all images without at least one container associated to them. In this case such volumes get a random name. Are you sure you want to continue? User explicitly asks to remove or untag the image. If you look at google searches google trend wasn't working for me : Search Results 124,000 117,00 1,850,000 247,000 28,000 32,500 This is not an amazing way to correlate it, but in each of these searches it is at least demonstrating that the feature for being able to remove by name is just as popular, if not more popular, than removing by time. If -a is specified, will also remove all images not referenced by any container.

Next

How to remove old Docker containers

docker image prune

See the for more examples. The issue you are describing is about different semantics between services and containers. We can clean up the containers with the docker container prune command. It should not be a surprise at all that it can't be used in a completely new docker run. But the bug, in this case, seems to be that prune uses the same codepath that rmi although it expects a different behavior than what is documented as the intended behavior for rmi. By default, all stopped containers are removed. And to do that we can use the to list all Docker volumes.

Next

docker

docker image prune

I really hope it's just a version problem. The reclaimed space is not significant right now, but it can be quite important if you build large images. Each command has multiple options available. I also puzzled by the statement from official document. I don't think this is the same issue. In addition, docker image ls does not support negative filtering, so it difficult to predict what images will actually be removed.

Next

docker

docker image prune

This will remove: - all stopped containers - all networks not used by at least one container - all dangling images - all build cache Are you sure you want to continue? Your example of keeping at least one tag is still supported by my proposed behaviour. That sounds like a bug to me Exactly. This will remove all stopped containers. Or if you really want to you can always -f. In this case Docker will move the tag to the latest image resulting from the build and all previous images created by that build will have no tag. Prune everything The docker system prune command is a shortcut that prunes images, containers, and networks.

Next

Docker: What is a dangling image and what is an unused image?

docker image prune

Your example is much easier to understand than these cases. You can get more help with the command docker volume prune --help. Are you sure you want to continue? This will remove all networks not used by at least one container. Sometimes you need to attach a new Docker container filled with different networking tools , to an existing overlay network, in order to inspect the network configuration or debug network issues. This is not subtle but very intentional decision from the first 0.

Next

Docker Image Prune

docker image prune

Did you see my example? We don't have the problem with the full disk space anymore. We have been fairly consistent in not breaking this sort of behavior because it tends to have more unexpected consequences for users than the original behavior. I still maintain that image prune and image rm should behave the same way with the exception of one being automated. To list all Docker images: Name, shorthand Default Description —all, -a false Remove all unused Docker images, not just dangling ones —filter Provide filter values e. This is the source of all oddy result. Unix's tail is your best friend here.

Next

docker image prune/rm removes in

docker image prune

Docker failing to remove containers? Are you sure you want to continue? Deleted containers don't free up mapped disk space. In addition, you may have downloaded images that you are not currently used by containers including stopped containers. At the time of the writing of this article the currently are until and label. The other format is the label! Have a question about this project? I decided to track the exact source of disk usage. Once you understand the basic structure, leveraging the command-line is straightforward. If we have to keep a tag around, we should keep the tag that's actually being used. True, but if you need it to go through proper shutdown to cleanup shared or reused resources i.

Next

Docker Cheat Sheet

docker image prune

I think you're making this problem way more complicated than it needs to be. This means I can't just remove by age, because the nodejs image might not change for weeks, while my app builds can be worthless in literally minutes. Or they may have never had a tag e. Predicting what will be removed If you are using positive filtering testing for the existence of a label or that a label has a specific value , you can use docker image ls with the same filtering syntax to see which images match your filter. To view all running containers: docker ps And for more information on any Docker command, run: docker swarm command —help Find the most important of these commands and a Docker Commands basic structure reminder on our attached. Are you sure you want to continue? Otherwise it's unnecessary confusion for the user.

Next

How To Remove Unused Docker Images, Containers, Volumes, and Networks

docker image prune

This will remove all dangling images. This is exactly the same issue. Docker command completion works for commands and options. I explained the differences 3 comments above. If system was running of hundreds or thousands of docker images, there is definitely possibility of holding few images irrespective of its age.

Next