<p>It is possible to prevent the overwrite of tags by listing the existing tags using <a href="https://github.com/jessfraz/reg" rel="nofollow noreferrer">https://github.com/jessfraz/reg</a> and exit the pipeline if there is a duplicate.</p>

CC BY-SA 3.0
2017-07-25T09:40:46.930Z
2017-07-25T17:44:34.867Z
2017-07-25T17:44:34.867Z
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<p>This is a follow-up to <a href="https://stackoverflow.com/q/31605661/2777965">this question</a> about preventing tag overwrite in docker hub.</p>

<p>When one pushes a tag to a private docker registry and the current tag exists then it will be overwritten. How to prevent this?</p>

<p>I have considered using a digest and other solutions, but this does not guarantee overwrites as one is still able to tag an image using a certain digest. I really would like to see an error and an exit code of 2.</p>

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How to prevent that tags will be overwritten in docker private registries?
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# How to prevent that tags will be overwritten in docker private registries?

(Asked by: username_0 on 2017-07-17)

This is a follow-up to [this question](https://stackoverflow.com/q/31605661/2777965) about preventing tag overwrite in docker hub.

When one pushes a tag to a private docker registry and the current tag exists then it will be overwritten. How to prevent this?

I have considered using a digest and other solutions, but this does not guarantee overwrites as one is still able to tag an image using a certain digest. I really would like to see an error and an exit code of 2.

**Tags:** docker


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## 1 answers

### Answer by username_0 on 2017-07-25. Score: 3 | Accepted answer

It is possible to prevent the overwrite of tags by listing the existing tags using <https://github.com/jessfraz/reg> and exit the pipeline if there is a duplicate.


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