server {
   # 监听ipv4
   listen 80;
   # 监听ipv6
   listen [::]:80;
   server_name localhost;

   location / {
      add_header Access-Control-Allow-Headers *;
      add_header Access-Control-Allow-Methods *;
      add_header Access-Control-Allow-Credentials true;
      add_header Access-Control-Allow-Origin *;
      add_header Cache-Control no-cache;
      add_header Access-Control-Max-Age 1728000;
      root /usr/share/nginx/html;
      index index.html index.htm;
      try_files $uri $uri/ /index.html;
   }

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