Github is an extra layer of backup, among normal backups.

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Notable reasons:

- Github runners went oftenly out of space & they were slow. With self hosted runners I don't have these issues anymore because I control the hardware.

Previously I was paying Docker Build Cloud/Depot for performance + Github Pro for extra minutes. Now it's zero cost, superb performance and unlimited minutes.

- I have a centralized registry with private packages and images.

- It's secure, I don't worry if I accidentally make a repo public or leak secrets. I control the access to it in network level.

- I own everything, in case something goes nuts (eg lose access to GH) I'm safe.