SOURCE_DATE_EPOCH: OCI exporter needs to be fixed to reset "org.opencontainers.image.created" annotation

[AkihiroSuda]

   OCI exporter needs to be fixed to reset "org.opencontainers.image.created" annotation

buildkit/exporter/oci/export.go

Line 131 in 092e977

desc.Annotations[ocispecs.AnnotationCreated] = time.Now().UTC().Format(time.RFC3339)

Originally posted by @AkihiroSuda in #2918 (comment)