server {
    listen 80;
    server_name localhost;

    root /usr/share/nginx/html;
    index index.html;

    location / {
        try_files $uri $uri/ /index.html;
    }

    # Proxy API requests to backend
    location /socket.io/ {
        proxy_pass http://server:3000;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
    }

    location /api/ {
        proxy_pass http://server:3000;
    }
}