Cloud Build runs on ephemeral workers, so your Docker cache vanishes on every run. Here's how to persist it in Artifact Registry with BuildKit's registry cache — uv stops re-downloading dependencies, builds get faster, greener and cheaper.
How BuildKit + Artifact Registry turn your CI/CD pipelines around: if nothing changed, uv doesn't re-download a single package.
How I got here
Early in my career, when I built CI pipelines, I didn't have much of an
optimization or GreenOps sensitivity. Pipelines ran, images got built, and I
never really questioned the wasted work.
Originally published on kuryzhev.cloud Last month a client asked me why their "cached" Docker...
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