Docker how to change repository name or rename image?

docker image tag server:latest myname/server:latest

or

docker image tag d583c3ac45fd myname/server:latest

Tags are just human-readable aliases for the full image name (d583c3ac45fd...).

So you can have as many of them associated with the same image as you like. If you don't like the old name you can remove it after you've retagged it:

docker rmi server

That will just remove the alias/tag. Since d583c3ac45fd has other names, the actual image won't be deleted.

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As a shorthand you can run:

docker tag d58 myname/server:latest

Where d58 represents the first 3 characters of the IMAGE ID,in this case, that's all you need.

Finally, you can remove the old image as follows:

docker rmi server

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Recently I had to migrate some images from Docker registry (docker.mycompany.com) to Artifactory (docker.artifactory.mycompany.com)

docker pull docker.mycompany.com/something/redis:4.0.10
docker tag docker.mycompany.com/something/redis:4.0.10 docker.artifactory.mycompany.com/something/redis:4.0.10
docker push docker.artifactory.mycompany.com/something/redis:4.0.10

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docker tag CURRENT_IMAGE_NAME DESIRED_IMAGE_NAME

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Since Docker doesn't provide an image rename capability, here is how to effectively rename a docker image in three commands:

docker pull UglyOldTag
docker tag  UglyOldTag ShinyNewTag
docker rmi  UglyOldTag

Note: This is really just adding a new tag and removing the old tag. As mentioned above, tags are actually just a mnemonic alias, or a pointer, to the image ID field. If that isn't confusing enough, the Docker API and documentation also often use "tag" to refer to the version (i.e. that part of the image name that comes after the ":", as in MyImage**:**latest).

However, typo's and mistaken names are not the only place where you might want to rename a tag. For example, if you are using Amazon's ECR, before you can check your image in, you are required to assign the full ARN as the tag. This means that your tags are big and ugly!

Note: As you look at the example below, it is useful to remember that the Amazon and DockerHub refer to each hierarchy of docker images as a "repository".

# Create the ECR 'repository' for the image 
aws ecr create-repository \
    --repository-name myFavoriteTag \
    --image-scanning-configuration scanOnPush=true \
    --region myFavoriteRegion
docker tag myFavoriteTag:latest aws_account_id.dkr.ecr.aws_region.amazonaws.com/myFavoriteTag:latest
docker push aws_account_id.dkr.ecr.aws_region.amazonaws.com/myFavoriteTag:latest

So, a quick way to clean the ugliness up is

ECR_BASE==aws_account_id.dkr.ecr.aws_region.amazonaws.com
docker pull ${ECR_BASE}/myFavoriteTag
docker tag  ${ECR_BASE}/myFavoriteTag myFavoriteTag
docker rmi  ${ECR_BASE}/myFavoriteTag
docker run myFavoriteTag

Of course, to check it back into ECR, you have to put the ugliness back on

docker tag ${ECR_BASE}/myFavoriteTag:latest

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How to rename image?

to copy an image or rename the existing image, you need only to create a new tag or repository from the existing one. You can do that with the docker tag command.

syntax/command:  docker tag SOURCE_IMAGE[:TAG] TARGET_IMAGE[:TAG]

#=> docker images
REPOSITORY                    TAG                   IMAGE ID       CREATED        SIZE
ubuntu-git                    latest                c0aaaba33a60   18 hours ago   208MB

docker tag ubuntu-git:latest ubuntu-git:latest-new-tag

#=> docker images
REPOSITORY                    TAG                   IMAGE ID       CREATED        SIZE
ubuntu-git                    latest                c0aaaba33a60   18 hours ago   208MB
ubuntu-git                    latest-new-tag        c0aaaba33a60   18 hours ago   208MB 

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The accepted answer is great for single renames, but here is a way to rename multiple images that have the same repository all at once (and remove the old images).

If you have old images of the form:

$ docker images
REPOSITORY               TAG                 IMAGE ID            CREATED             SIZE
old_name/image_name_1    latest              abcdefghijk1        5 minutes ago      1.00GB
old_name/image_name_2    latest              abcdefghijk2        5 minutes ago      1.00GB

And you want:

new_name/image_name_1
new_name/image_name_2

Then you can use this (subbing in OLD_REPONAME, NEW_REPONAME, and TAG as appropriate):

OLD_REPONAME='old_name'
NEW_REPONAME='new_name'
TAG='latest'

# extract image name, e.g. "old_name/image_name_1"
for image in $(docker images | awk '{ if( FNR>1 ) { print $1 } }' | grep $OLD_REPONAME)
do \
  OLD_NAME="${image}:${TAG}" && \
  NEW_NAME="${NEW_REPONAME}${image:${#OLD_REPONAME}:${#image}}:${TAG}" && \
  docker image tag $OLD_NAME $NEW_NAME && \
  docker rmi $image:${TAG}  # omit this line if you want to keep the old image
done

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docker image tag #imageId myname/server:latest

This works for me

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The below python code renames multiple images and then pushes back to the new repository. It's a docker repository migration code written in python3.6

import docker
client = docker.from_env()
docker_api = docker.APIClient()
images = client.images.list()
for image in images:
    try:
        if image.tags[0] and '<old repository>' in image.tags[0]: 
            version = image.tags[0].split("/")[-1]
            type(version)
            print("version is {}".format(version))
            docker_api.tag(image.tags[0],"<new repository>/{}".format(version))
    except Exception as Ex:
        print(image)
        print(Ex)

and then push images by below shell script

docker images | grep <new repository> | awk '{print $1":"$2}' | xargs -L1 docker push

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Renaming using Image ID

docker image tag <TAG> <NAME YOU WANT TO GIVE>

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To rename an image, you give it a new tag, and then remove the old tag using the ‘rmi’ command:

$ docker tag $ docker rmi

This second step is scary, as ‘rmi’ means “remove image”. However, docker won’t actually remove the image if it has any other tags. That is, if you were to immediately follow this with: docker rmi , then it would actually remove the image (assuming there are no other tags assigned to the image)

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You can change multiple repos/tag tag with this command:

docker images --filter=reference='server' --format='{{.Repository}}:{{.Tag}}' | xargs -r -P$(nproc) -I {} docker image tag {} myname/{}

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Acording to docker documentation https://docs.docker.com/engine/reference/commandline/rename/

docker rename CONTAINER NEW_NAME

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