# DockerHub versions of swipl (not latest version) How is version determined?

**URL:** <https://swi-prolog.discourse.group/t/dockerhub-versions-of-swipl-not-latest-version-how-is-version-determined/3092>\
**Category:** General\
**Created:** [October 24, 2020, 10:49am UTC](https://swi-prolog.discourse.group/t/dockerhub-versions-of-swipl-not-latest-version-how-is-version-determined/3092 "2020-10-24T10:49:31Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![EricGT](https://avatars.discourse-cdn.com/v4/letter/e/f1d935/32.png) [@EricGT](https://swi-prolog.discourse.group/u/EricGT)\
**Post date:** [October 24, 2020, 10:49am UTC](https://swi-prolog.discourse.group/t/dockerhub-versions-of-swipl-not-latest-version-how-is-version-determined/3092/1 "2020-10-24T10:49:31Z")

</div>

In investigating ways to install SWI-Prolog (specifically for use with [WSL 2](https://docs.microsoft.com/en-us/windows/wsl/) which is synergistic with Docker ([ref](https://docs.docker.com/docker-for-windows/wsl/))) was checking out using the [swipl image](https://hub.docker.com/_/swipl) from [DockerHub](https://hub.docker.com/)

> **Details**
>
> ```bash
> PS C:\Users\Eric> docker run swipl
> Unable to find image 'swipl:latest' locally
> latest: Pulling from library/swipl
> babf97a3f00a: Pull complete
> 2f2a798fd949: Pull complete
> 93306910516f: Pull complete
> Digest: sha256:79302422d49e29dd47326059e578c72cc974d7fbb51bf132ff0b9f5129b9f603
> Status: Downloaded newer image for swipl:latest
> Welcome to SWI-Prolog (threaded, 64 bits, version 8.2.0)
> 
> ```

Was expecting the latest version, [8.3.10](https://swi-prolog.discourse.group/t/ann-swi-prolog-8-3-10/3085), but the DockerHub [version](https://hub.docker.com/_/swipl) is at, 8.2.0, so was wondering how are the versions chosen for DockerHub.

I did find the GitHub repository related to the DockerHub image ([docker-swipl](https://github.com/SWI-Prolog/docker-swipl)) but don’t know what triggers the build and if it just a matter of when the build takes places that determines the version.

As near as I can figure it is just done manually.

99% of the time being a few minor versions behind is fine so this is just out of curiosity.