Configure securityContext for containers

[burcheja]

In order to improve the security of the containers, as described in the references below, request that consideration be given to configuring the securityContext to specify a user other than root. This would help compartmentalize the impact if a container were compromised by mitigating potential container escape vulnerabilities.

• https://aws.github.io/aws-eks-best-practices/security/docs/pods/#do-not-run-processes-in-containers-as-root
• https://media.defense.gov/2022/Aug/29/2003066362/-1/-1/0/CTR_KUBERNETES_HARDENING_GUIDANCE_1.2_20220829.PDF

[jawadqur]

#136

This is being handled in this effort. We are re-making all of our images based on a secure base image + moving all users to be non-root.