Metadata descriptors #4978

Job	Run time
prepare	1s
test / prepare	2m 18s
test / run (containerd, ./frontend/dockerfile, integration)	5m 19s
test / run (containerd, ./frontend/dockerfile, dockerfile)	7m 10s
test / run (containerd-rootless, ./frontend/dockerfile, integration)	4m 56s
test / run (containerd-rootless, ./frontend/dockerfile, dockerfile)	6m 38s
test / run (containerd-1.6, ./frontend/dockerfile, integration)	5m 6s
test / run (containerd-1.6, ./frontend/dockerfile, dockerfile)	6m 53s
test / run (containerd-1.7, ./frontend/dockerfile, integration)	4m 57s
test / run (containerd-1.7, ./frontend/dockerfile, dockerfile)	7m 46s
test / run (containerd-snapshotter-stargz, ./frontend/dockerfile, integration)	5m 18s
test / run (containerd-snapshotter-stargz, ./frontend/dockerfile, dockerfile)	8m 49s
test / run (oci, ./frontend/dockerfile, integration)	4m 23s
test / run (oci, ./frontend/dockerfile, dockerfile)	5m 44s
test / run (oci-rootless, ./frontend/dockerfile, integration)	4m 36s
test / run (oci-rootless, ./frontend/dockerfile, dockerfile)	6m 44s
test / run (oci-rootless-slirp4netns-detachnetns, ./frontend/dockerfile, integration)	4m 26s
test / run (oci-rootless-slirp4netns-detachnetns, ./frontend/dockerfile, dockerfile)	5m 54s
test / run (oci-snapshotter-stargz, ./frontend/dockerfile, integration)	5m 2s
test / run (oci-snapshotter-stargz, ./frontend/dockerfile, dockerfile)	6m 31s
image (mainline)	5m 21s
image (labs)	5m 10s
release	0s
scout	0s
	1h 59m 2s

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