As well as auditing the normal Linux file system and system calls, you should also audit all Docker related files and directories. The Docker daemon runs with root privileges and its behavior depends on some key files and directories. /usr/bin/runc is one such file, and as such it should be audited.
Recommended Mitigation
You should add a rule for /usr/bin/runc file, then restart the audit daemon.
Workload misconfigurations
