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I have a docker image with <none> tag.
I want to run the hello-world image with TAG <none>. How can I do that?
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From their documentation. This will display untagged images, that are the leaves of the images tree (not intermediary layers). These images occur when a new build of an image takes the repo:tag away from the IMAGE ID, leaving it untagged.
docker image prune removes all dangling images (those with tag none). docker image prune -a would also remove any images that have no container that uses them.
You can also use rmi command with docker to remove images. It removes (and un-tags) one or more images from the Docker node. If an image has multiple tags, using this command with the tag as a parameter only removes the tag. If the tag is the only one for the image, both the image and the tag are removed.
To push an image to a private registry and not the central Docker registry you must tag it with the registry hostname and port (if needed).
In order to run a dangling image, you first need to tag that image. You can do this by using image ID.
For example:
docker tag [IMAGE_ID] [REPOSITORY]:[TAG]
Now you can run that image with the tag you just defined.
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You can run a container from a specific image by using the image's ID, like:
docker run -it efb6339f1b3e /bin/bash
If you want to give your image a tag, you can do that by using -t option in the docker build command, like:
docker build -t codinghaus/hello-world:1.0.0
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