server {
  listen       ${NGINX_PORT};

  location / {
    root  /usr/share/nginx/html;
    index index.html index.htm;
  }

  error_page  404              /404.html;

  error_page   500 502 503 504  /50x.html;
  location = /50x.html {
    root /usr/share/nginx/html;
  }

  location ~ api\/?.* {
    proxy_pass http://backend:5000;
  }
}