nginx.conf

events {
  worker_connections 1024;
}

http {
  include /etc/nginx/mime.types;
  
  upstream backend {
    server localhost:3000;
  }
  
  server {
    listen 80;
    server_name localhost;
    root /var/www/html;
    index index.html;
    
    location / {
      try_files $uri $uri/ /index.html;
    }
    
    location /api {
      proxy_pass http://backend;
      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;
    }
  }
}