a simple nginx conf file

service.conf

server {
    listen 8001;
    server_name localhost;
    charset utf-8;
    root /opt/celery_web;
    location / { 
        root /opt/celery_web;
    }   
    location ^~ /choi_wan_api/ {
        #add_header 'Access-Control-Allow-Origin' '*';
        #add_header 'Access-Control-Allow-Credentials' 'true';
        #add_header 'Access-Control-Allow-Methods' 'OPTION, POST, GET, PUT, DELETE';
        #add_header 'Access-Control-Allow-Headers' 'X-Requested-With, Content-Type';
        proxy_pass http://localhost:8002;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_redirect off;
    }   
    #location ~ .*\.(html|htm|gif|jpg|jpeg|bmp|png|ico|txt|js|css)$
    #{  
    #    root /opt/choi-wan/management_web;
    #}  
    access_log /var/log/nginx/access.log;
    error_log  /var/log/nginx/error.log;
}