Nginx worker processes speed improvement

[abarmat]

When all request are being served by the nginx container it is advised to use a configuration that allow using many CPU to handle network workload.

worker_processes is set by default to 1

I could be set to auto to use one worker per processor.

https://nginx.org/en/docs/ngx_core_module.html#worker_processes

[adrabenche]

Solved on commit 0b41454