Restrict Seccomp

apiVersion: kyverno.io/v1
kind: ClusterPolicy
metadata:
  name: restrict-seccomp
  annotations:
    policies.kyverno.io/title: Restrict Seccomp
    policies.kyverno.io/category: Pod Security Standards (Baseline)
    policies.kyverno.io/severity: medium
    policies.kyverno.io/subject: Pod
    kyverno.io/kyverno-version: 1.6.0
    kyverno.io/kubernetes-version: 1.22-1.23
    policies.kyverno.io/description: The seccomp profile must not be explicitly set to Unconfined. This policy,  requiring Kubernetes v1.19 or later, ensures that seccomp is unset or  set to `RuntimeDefault` or `Localhost`.
spec:
  background: true
  validationFailureAction: Audit
  rules:
    - name: check-seccomp
      match:
        any:
          - resources:
              kinds:
                - Pod
      validate:
        message: Use of custom Seccomp profiles is disallowed. The fields spec.securityContext.seccompProfile.type, spec.containers[*].securityContext.seccompProfile.type, spec.initContainers[*].securityContext.seccompProfile.type, and spec.ephemeralContainers[*].securityContext.seccompProfile.type must be unset or set to `RuntimeDefault` or `Localhost`.
        pattern:
          spec:
            "=(securityContext)":
              "=(seccompProfile)":
                "=(type)": RuntimeDefault | Localhost
            "=(ephemeralContainers)":
              - "=(securityContext)":
                  "=(seccompProfile)":
                    "=(type)": RuntimeDefault | Localhost
            "=(initContainers)":
              - "=(securityContext)":
                  "=(seccompProfile)":
                    "=(type)": RuntimeDefault | Localhost
            containers:
              - "=(securityContext)":
                  "=(seccompProfile)":
                    "=(type)": RuntimeDefault | Localhost