This commit deletes a duplicated unit case for cosign signature scheme.
Also, the original cosign signed test image is based on busybox, thus a successfully pulling for that image (busybox) via nydus-snapshotter would cause another pulling with policy preventing the image successful. This is because of some logic inside nydus-snapshotter.
To handle this, we update the signed image to be a different one from busybox. Separately we will fix this on the snapshotter side.
This commit deletes a duplicated unit case for cosign signature scheme.
Also, the original cosign signed test image is based on busybox, thus a successfully pulling for that image (busybox) via nydus-snapshotter would cause another pulling with policy preventing the image successful. This is because of some logic inside nydus-snapshotter.
To handle this, we update the signed image to be a different one from busybox. Separately we will fix this on the snapshotter side.
cc @stevenhorsman