Privileged execution use case: use nginx instead of test-pod image

[mtardy]

In the documentation on the privileged execution use case:

https://github.com/cilium/tetragon/blob/f4d6ac470658375109bcb37cfbe679b5432cdf6d/README.md?plain=1#L594-L609

We could use a more realistic example, using an nginx image instead of the test-pod made-up image.

Let's do it. I'd just use a simple nginx pod spec for this, e.g:

apiVersion: v1
kind: Pod
metadata:
  name: privileged-the-pod
spec:
  hostPID: true
  hostNetwork: true
  containers:
  - name: privileged-the-pod
    image: nginx:latest
    ports:
    - containerPort: 80
    securityContext:
      privileged: true

Originally posted by @sharlns in https://github.com/cilium/tetragon/pull/673#discussion_r1112219567

[janvi01]

Hey @mtardy I would like to work on this.