How do I use Prune so that it gets all of the images?

I built an image and then afterward ran client.images.prune(). The returned dict stated {'ImagesDeleted': None, 'SpaceReclaimed': 0}. I then ran docker system prune -a -f and saw that it deleted a lot of space (~1gb). I then tried client.images.remove, but that also did nothing.

What’s the correct way of pruning the system from docker-py?

[shin-]

The -a option in the CLI is equivalent to setting the dangling filter to false. (according to https://github.com/docker/cli/blob/master/cli/command/image/prune.go#L59)

In short, docker image prune -a -f translates as such: client.images.prune(filters={'dangling': False})

[rodrigodlima]

For me, the client.images.prune() don’t works too. For example, I have one image nginx:1.12.2 that is not in use for any container, when I run the client.images.prune(), this image is not removed.

[GCC 4.8.5 20150623 (Red Hat 4.8.5-16)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import docker
>>> client = docker.from_env()
>>> client.images.list()
[<Image: 'docker.io/nginx:1.12.2'>, <Image: 'docker.io/nginx:latest'>, <Image: 'docker.io/alpine:latest'>]
>>> client.images.prune()
{u'SpaceReclaimed': 0, u'ImagesDeleted': None}

[root@localhost ~]# docker image prune -a -f Deleted Images: untagged: docker.io/nginx:1.12.2