Sensible default for NGINX_WORKER_CONNECTIONS

[kykc]

Regarding nginx worker connections limit, as defined here:

Querying ulimit from inside the container:

root@abc201f5e274:/# ulimit -n
1048576

I don't think it's rather sensible default value, as it greatly affects memory footprint: on 8-thread processor I got 8 workers each consuming 404MiB of RES memory for nginx alone, which is quite excessive IMO.

In any case, I think it's a good thing to mention that this option greatly affects memory consumption of the container in README.md

Update

Can't find info about docker run behavior when --ulimit is not present, but seems that docker sets such ulimit inside all containers on my host for some reason. On the host itself ulimit has pretty usual value:

kykc@yes:~$ ulimit -n
1024

[ShockwaveNN]

You can use env variables:
NGINX_WORKER_PROCESSES - to set nginx worker process
NGINX_WORKER_CONNECTIONS - to set max connetion for each worker
Also you can change ulimit by docker --ulimit key - see https://docs.docker.com/engine/reference/commandline/run/#/set-ulimits-in-container---ulimit
We will add info about that in manuals, thanks.

[agolybev]

Added nginx params description. See Available Configuration Parameters section for details.