old-react-project/default.conf

server {
    listen 80;
    server_name localhost;
    root /usr/share/nginx/html;
    auth_basic off;

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

    # 404 if a file is requested (so the main app isn't served)
    location ~ ^.+\..+$ {
        try_files $uri =404;
    }
}