server {
    listen       80;
    listen  [::]:80;
    server_name  localhost;

    charset utf-8;
    charset_types text/xml text/plain text/vnd.wap.wml application/javascript application/rss+xml text/css application/json;

    #access_log  /var/log/nginx/host.access.log  main;

    location /sw.js {
      root /app;
      add_header Cache-Control "no-cache, immutable";
    }

    location ~* \.(?:ico|gif|jpe?g|png|woff2?|eot|otf|ttf|svg|js|css|webmanifest)$ {
      root /app;
      add_header Cache-Control "public, max-age=31536000, s-maxage=31536000, immutable";
    }

    location / {
      root /app;
      index  index.html;
      add_header Cache-Control "no-cache";
      # 取消绝对路径的重定向
      absolute_redirect off;
    }

    error_page   404 500 502 503 504  /404.html;
    location = /404.html {
        root   /app;
        add_header Cache-Control "no-cache";
    }
    server_tokens off;
}