server {
    listen 80;
    location / {
        root   /usr/share/nginx/html;
        index  index.html index.htm;
        # to redirect all the requests to index.html, 
        # useful when you are using react-router
        try_files $uri /index.html; 
        proxy_pass http://localhost:5000
    }
    error_page   500 502 503 504  /50x.html;
    location = /50x.html {
        root   /usr/share/nginx/html;
    }
}