"no space left on device" when building images

When building my images, I am getting “no space left on device” errors

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This is because you need a larger disk for buildkit, or reduce your buildkit cacheRatio.

The default cacheRatio is 0.5 to have space for in-flight builds and pulling images. Based on your scenario, you might need a lower cacheRatio or a larger disk:

buildkit:
  persistence:
    enabled: true
    size: 500Gi
    cacheRatio: 0.3