nginx: 增加图片缓存配置

default.conf.template

@@ -15,6 +15,12 @@ server {
         client_max_body_size 300m;   #最大接受300m文件以内的
         client_body_timeout 20s;
    }
+
+   location ~ .*\.(html|htm|gif|jpg|jpeg|bmp|png|ico|txt|js|css){
+       root    /usr/share/nginx/html;
+       expires 7d;
+   }
+
    #error_page  404              /404.html;
 
    # redirect server error pages to the static page /50x.html