"nginx -T" command execution failures

[dareste]

Describe the bug

Command executions fail if the container within the iingress pod has a different name than nginx-ingress:

2024/10/10 14:11:39.727612 nic_job_list.go:78: 	Command execution [/usr/sbin/nginx -T] failed for pod nginx-ingress-a-6974589fc5-8rmlr in namespace nginx-ingress: container nginx-ingress is not valid for pod nginx-ingress-a-6974589fc5-8rmlr

Expected behavior

Command execution should work regardless of the container name.