Test container metadata and cryptographic signature

[suse]

Test container metadata and cryptographic signature

[dirkmueller]

we have both tests for metadata as well as signatures (via

BCI-tests/.github/workflows/ci.yaml

Line 204 in ea5dec3

echo $policy_json | jq '.transports += { "docker": {"registry.opensuse.org": [{ "type": "signedBy", "keyType": "GPGKeys", "keyPaths": ["/etc/containers/devel_bci.key", "/etc/containers/opensuse_container-2023.key", "/etc/containers/opensuse_container.key"]}]}}' | sudo tee /etc/containers/policy.json

)