Merge pull request #5573 from tonistiigi/oci-aftifact-attestation #5176

Job	Run time
prepare	1s
test / prepare	2m 5s
test / run (containerd, ./frontend/dockerfile, integration)	5m 6s
test / run (containerd, ./frontend/dockerfile, dockerfile)	7m 2s
test / run (containerd-rootless, ./frontend/dockerfile, integration)	5m 17s
test / run (containerd-rootless, ./frontend/dockerfile, dockerfile)	7m 22s
test / run (containerd-1.6, ./frontend/dockerfile, integration)	4m 58s
test / run (containerd-1.6, ./frontend/dockerfile, dockerfile)	7m 37s
test / run (containerd-1.7, ./frontend/dockerfile, integration)	5m 6s
test / run (containerd-1.7, ./frontend/dockerfile, dockerfile)	7m 10s
test / run (containerd-snapshotter-stargz, ./frontend/dockerfile, integration)	6m 16s
test / run (containerd-snapshotter-stargz, ./frontend/dockerfile, dockerfile)	9m 10s
test / run (oci, ./frontend/dockerfile, integration)	5m 7s
test / run (oci, ./frontend/dockerfile, dockerfile)	6m 5s
test / run (oci-rootless, ./frontend/dockerfile, integration)	4m 35s
test / run (oci-rootless, ./frontend/dockerfile, dockerfile)	5m 58s
test / run (oci-rootless-slirp4netns-detachnetns, ./frontend/dockerfile, integration)	4m 51s
test / run (oci-rootless-slirp4netns-detachnetns, ./frontend/dockerfile, dockerfile)	6m 28s
test / run (oci-snapshotter-stargz, ./frontend/dockerfile, integration)	4m 42s
test / run (oci-snapshotter-stargz, ./frontend/dockerfile, dockerfile)	6m 5s
image (mainline)	5m 46s
image (labs)	5m 52s
scout (master)	23s
scout (master-labs)	23s
release	0s
	2h 3m 25s

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