how to stop dockerized nginx in foreground from flooding logs? - ruby-on-rails

Question

I'm running nginx and unicorn in a docker container managed by supervisord.
So, supervisord is the docker command. It in turn spawns nginx and unicorn. Unicorn talks to nginx over a socket. nginx listens on port 80.
I also have a logspout docker container running, basically piping all the docker logs to papertrail by listening to docker.sock.
The problem is nginx is constantly spewing thousands of mundane entries to the logs:
172.31.45.231 - - [25/May/2016:05:53:33 +0000] "GET / HTTP/1.0" 200 12961 0.0090
I'm trying to disable it.
So far I've:
set access_logs /dev/null; in nginx.conf and vhost files.
tried to tell supervisord to stop logging the requests
[program:nginx]
command=bash -c "/usr/sbin/nginx -c /etc/nginx/nginx.conf"
stdout_logfile=/dev/null
stderr_logfile=/dev/null
tried to tell supervisord to send the logs to syslog not stdout:
[program:nginx]
command=bash -c "/usr/sbin/nginx -c /etc/nginx/nginx.conf"
stdout_logfile=syslog
stderr_logfile=syslog
Set log level in Unicorn to Warn in the rails code, and via env var.
Full supervisord conf:
[supervisord]
nodaemon=true
loglevel=warn
[program:unicorn]
command=bundle exec unicorn -c /railsapp/config/unicorn.rb
process_name=%(program_name)s_%(process_num)02d
numprocs=1
stdout_logfile=/dev/stdout
stdout_logfile_maxbytes=0
redirect_stderr=true
[program:nginx]
command=bash -c "/usr/sbin/nginx -c /etc/nginx/nginx.conf"
stdout_logfile=/dev/null
stderr_logfile=/dev/null

Answer 1

You could try and change nginx log level with a:
access_log off;
The goal remains to modify the nginx.conf used by the nginx image.