docs: adjust trg 4.03 on userid

[almadigabor]

Description

Fixes eclipse-tractusx/sig-infra#369

Adjusted the user ids in the Pod template and added a recommendation section to look for user id created in the base image.

---

I would consider adding more fields as described in the Kubernetes docs to further enhance security like runAsGroup, fsGroup and also dropping capabilities. I would welcome some suggestions here.

Pre-review checks

Please ensure to do as many of the following checks as possible, before asking for committer review:

• DEPENDENCIES are up-to-date. Dash license tool. Committers can open IP issues for restricted libs.
• Copyright and license header are present on all affected files

[tomaszbarwicki]

Changes LGTM, just a minor thing as I believe runAsUser is enough to set at Pod level, not sure if there is a reason to duplicate it at container level in the k8s manifest.

[almadigabor]

Changes LGTM, just a minor thing as I believe runAsUser is enough to set at Pod level, not sure if there is a reason to duplicate it at container level in the k8s manifest.

You're right, I'll remove that part. Specifying on container level just overwrites the Pod level setting.

[tomaszbarwicki]

LGTM