basic nginx config with clean logging

nginx.conf

user nginx;
worker_processes auto;
error_log /var/log/nginx/error.log;
pid /run/nginx.pid;

events {
    worker_connections 1024;
}

http {
    map $http_user_agent $ignore_status_checks {
        default                 0;
        "~Pingdom.*"            1;
        "~*\(health\)"          1;
        "~*Monit"               1;
    }

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

    access_log  /var/log/nginx/access.log  main;

    sendfile            on;
    tcp_nopush          on;
    tcp_nodelay         on;
    keepalive_timeout   65;
    types_hash_max_size 2048;

    include             /etc/nginx/mime.types;
    default_type        application/octet-stream;

    server {
        listen 8000;

        location / {

          if ($ignore_status_checks) {
            access_log      off;
          }

          proxy_cache_bypass                 $http_upgrade;

          proxy_set_header Upgrade           $http_upgrade;
          proxy_set_header Connection        "upgrade";
          proxy_set_header Host              $host;
          proxy_set_header X-Real-IP         $remote_addr;
          proxy_set_header X-Forwarded-For   $proxy_add_x_forwarded_for;
          proxy_set_header X-Forwarded-Proto $scheme;
          proxy_set_header X-Forwarded-Host  $host;
          proxy_set_header X-Forwarded-Port  $server_port;

          proxy_pass          http://app:3000;
          proxy_read_timeout  60s;
          proxy_send_timeout  60s;
          proxy_connect_timeout 60s;

          proxy_http_version 1.1;
          proxy_request_buffering off;
        }
        location /health {
                access_log off;
                error_log /dev/stderr error;
                proxy_pass http://app:3000;
         }
    }
}