Migrating our containers to GitHub Container Registry

[tomkerkhove]

We've discussed it in the past (see kedacore/keda#995) but I think it's time to migrate our Docker images to GitHub Container Registry which brings our artifacts closer to our GitHub repos and gives us more insights on the adoption (# of pulls per tag, instead of vague total pull count).

We are dry-running this for our HTTP add-on and it's fairly straightforward.

Here is how people can discover them:

Per Docker image, you can then see the pull count per tag:

I've used this on other projects as well and it gives you a lot more insights than Docker Hub, and would never move back.

⚠ If we do this, then we should move all Docker images to our new registry for sake of completeness, but keep the old ones on Docker Hub.

[tomkerkhove]

Thoughts @kedacore/keda-maintainers?

[tomkerkhove]

Happy to pick this up.

[zroubalik]

Sounds good!

[tomkerkhove]

Thoughts on this @jeffhollan @anirudhgarg @ahmelsayed?

[tomkerkhove]

Yesterday we've agreed that this is the way forward, but we'll publish them in both Docker Hub & GitHub Container Registry until GHCR is out of preview.

We will:

• Automatically push Docker images to GitHub Container Registry (Core - #1650)
• Automatically push Docker images to GitHub Container Registry (Test tools - #8)
• Re-tag and push our existing images in Docker Hub to GitHub Container Registry (GHCR) (#1651)
• Use Docker images from GitHub Container Registry in Helm charts (#127)
• Write blog post to elaborate on why (Provide "Migrating our container images to Github Container Registry" blog post keda-docs#408)
• Open a GitHub Discussion with context on why we are doing this and how it impacts people

(Meeting notes)

[tomkerkhove]

I'd propose to write a small blog post with this as well, next to the GitHub Discussion, what do you think?

[tomkerkhove]

Blog post is published on https://keda.sh/blog/migrating-to-github-container-registry/ and discussion is open on kedacore/keda#1700

[tomkerkhove]

GHCR is GA, it's time to remove Docker Hub support and close this deprecation.

Agreed @kedacore/keda-maintainers? Happy to pick this up.

[JorTurFer]

I agree

[zroubalik]

+1

[tomkerkhove]

KEDA v2.6 will only be available on GitHub Container Registry.