worker_processes auto;

events { worker_connections 1024; }

http {
    include       mime.types;
    default_type  application/octet-stream;
    sendfile        on;
    keepalive_timeout  65;

    upstream node_app {
        server 127.0.0.1:3001;
    }

    server {
        listen 80;
        server_name _;

        location / {
            root   /usr/share/nginx/html;
            try_files $uri /index.html;
        }

        location /api {
            proxy_pass http://node_app;
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection 'upgrade';
            proxy_set_header Host $host;
            proxy_cache_bypass $http_upgrade;
        }
    }