CODEWITHSUNDEEP
dockerdockerhub
user606521
user606521

Reputation: 15434

Is it possible for image to have multiple tags?

When I am pushing new image to repo I would like it to have two tags for example 0.2 and latest. This would allow to always pull latest image version by using latest tag and a specific version by using 0.2 tag for example. Is it possible with docker?

Is there any workaround? The only solution I see is to make two separate pushes...

Upvotes: 144

Views: 135444

Answers (6)

lauksas
lauksas

Reputation: 553

If you don't want to refer the image by hash, but "copy a tag" you can do the following:

docker tag image:origin_tag image:target_tag
docker push image:target_tag

Upvotes: 1

Aziz Zoaib
Aziz Zoaib

Reputation: 771

UPDATE: Prior to Jan 2021

It pushes all the tags, if you dont specify the tags in push command.

docker tag user/imagename:tag1
docker tag user/imagename:tag2

docker push user/imagename

Upvotes: 23

Peterino
Peterino

Reputation: 16697

You can build an image with several tags and then push the image with the --all-tags option.

Example:

docker build -t reg/user/image:foo -t reg/user/image:latest .

docker push reg/user/image --all-tags

Older Docker clients that do not support --all-tags will push all tags by default (simply omit the option), newer clients will only push latest by default. As an alternative, you may want to push each tag separately.

Upvotes: 280

Tamlyn
Tamlyn

Reputation: 23564

There are valid reasons for having multiple tags on an image (see OP) but if you are wanting to add tags for informational purposes, you may be better off with image labels.

Docker labels are inside the image rather than applied to it in the registry. This means the labels are immutable and always get copied with the image.

Label Schema defines a list of interoperable labels for things like version, vcs-ref, build-date and others.

Upvotes: 3

Henrik Sachse
Henrik Sachse

Reputation: 54212

You need to do one push per each version like:

docker tag test:latest <repo>/<user>/test:latest
docker push <repo>/<user>/test:latest

docker tag test:0.2 <repo>/<user>/test:0.2
docker push <repo>/<user>/test:0.2

You can also combine and say the latest version is 0.2 like:

docker tag <repo>/<user>/test:latest <repo>/<user>/test:0.2
docker push <repo>/<user>/test:0.2

So those will point the same image layer.

Upvotes: 35

manojlds
manojlds

Reputation: 301147

You can create multiple tags:

docker tag <id> <user>/<image>:0.2
docker tag <id> <user>/<image>:latest

and push these.

Upvotes: 83

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