ghcr.io/knative/builder-jammy-tiny:0.0.240 come from what？

[jixianyihao]

https://github.com/knative/func/blob/aed23cf9a1d184d969b773ba5e178fc7cc1923b9/pkg/builders/buildpacks/builder.go#L31

var DefaultBaseBuilder = "ghcr.io/knative/builder-jammy-base:0.4.283"
var DefaultTinyBuilder = "ghcr.io/knative/builder-jammy-tiny:0.0.240"

where are the two image come from