# run command:
docker run --restart unless-stopped --name nginx-b -p 80:80 -p 443:443 -v /host/nginx-b.conf:/etc/nginx/nginx.conf:ro --link=rancher-server -d nginx

# nginx.conf
events {
  worker_connections  4096;  ## Default: 1024
}

http {

  server {
    listen 80;
    server_name _;

    access_log /var/log/nginx/access.log;
    error_log  /var/log/nginx/error.log;

    location / {
      proxy_set_header Host $host;
      proxy_set_header X-Forwarded-Proto $scheme;
      proxy_set_header X-Forwarded-Port $server_port;
      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
      proxy_pass http://10.100.10.1:8080;
        proxy_http_version 1.1;
      proxy_set_header Upgrade $http_upgrade;
      proxy_set_header Connection "upgrade";
      # This allows the ability for the execute shell window to remain open for up to 15 minutes. Without this parameter, the default is 1 minute and will automatically close.
      proxy_read_timeout 900s;
    }
  }

}