To give us the option later down the road of producing recommended OCI
names in BuildKit (using com instead of vnd, woops), we need to update
Buildx to be able to process both.
Ideally, if a Buildx/BuildKit release hadn't been made we could just
switch over, but since we have, we'd need to support both (at least for
a while, eventually we could consider deprecating+removing the vnd
variant).
Signed-off-by: Justin Chadwell <me@jedevc.com>
Delay loading the attestation data immediately, and only compute it upon
request. We do this using a deferred function which allows to define the
computation in the same place as before, but perform the computation
later.
With this patch, we ensure that the attestation data is only pulled from
the remote if it is actually referenced in the format string -
otherwise, we can skip it, for improved performance.
Signed-off-by: Justin Chadwell <me@jedevc.com>
