Is your feature request related to a problem? Please describe.
We gain tls termination over tcp with this nginx-ingress controller, we appreciate a lot.
In order to follow the security compliance, we need to start pod using nonroot user.

I noticed there is unprivileged nginx image: https://github.com/nginxinc/docker-nginx-unprivileged/blob/master/README.md, and I followed the instructions https://github.com/nginxinc/kubernetes-ingress/tree/v1.4.5/build to build nginx-ingress after tweaking the dockerfiles and nginx.tmpl.
There are some privileged locations hard-coded in go source code, for example: listen unix:/var/run/nginx-config-version.sock, so the nginx-ingress binary built by go doesn't really want to run in unprivileged way.
We have no expert on Go language, so we are pretty much stuck here.

Describe the solution you'd like
Has this project ever been considered to build unprivileged nginx-ingress?
If not, what is the reason or concerns?
If yes, that's great.