ConfigurePodConfigSecurityContext configures the Security Context values into the PodConfig if the securityContext for the 'securityContextID' is in 'securityContextsMap' then it's values are set otherwise FSGID is set to 0 for Kubernetes.

GenerateImageTag return the final image after evaluating the registry configuration and the list of images.

GetSecurityContext returns the security context if it exists in 'securityContextsMap'.