# Docker tags for pre-release Julia versions

**URL:** <https://discourse.julialang.org/t/docker-tags-for-pre-release-julia-versions/129211>\
**Category:** Tooling\
**Tags:** question, docker\
**Created:** [May 21, 2025, 11:36am UTC](https://discourse.julialang.org/t/docker-tags-for-pre-release-julia-versions/129211 "2025-05-21T11:36:44Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Tamas\_Papp](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/tamas_papp/32/25949_2.png) [@Tamas\_Papp](https://discourse.julialang.org/u/Tamas_Papp)\
**Post date:** [May 21, 2025, 11:36am UTC](https://discourse.julialang.org/t/docker-tags-for-pre-release-julia-versions/129211/1 "2025-05-21T11:36:44Z")

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Does anyone know why the [official Julia Docker images](https://hub.docker.com/_/julia/) have an `-rc` tag for the pre-release (currently eg `1.12-rc`)?

This is a bit cumbersome as when 1.12 is released, I will have to manually remove the `-rc` from various files.

I wanted to ask here before raising an issue about this with Docker.

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**Author:** ![ImreSamu](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/imresamu/32/20677_2.png) [@ImreSamu](https://discourse.julialang.org/u/ImreSamu)\
**Post date:** [July 27, 2025, 7:12am UTC](https://discourse.julialang.org/t/docker-tags-for-pre-release-julia-versions/129211/2 "2025-07-27T07:12:09Z")

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as I see: the docker `-rc` tag functions as a generic alias for the current release‑candidate image. ( `-beta1` , `-beta2`, `-beta3`, `-beta4` … ,`-rc1` ,`-rc2` ,`-rc3`, … )

- [What means "rc" (lower case) in image tag? · Issue #2349 · docker-library/docs · GitHub](https://github.com/docker-library/docs/issues/2349)

- [History for 1.12-rc/bullseye/Dockerfile - docker-library/julia · GitHub](https://github.com/docker-library/julia/commits/master/1.12-rc/bullseye/Dockerfile)