location ~* \.(png|jpg|jpeg|gif|ico)$ {
    expires 2d;
    add_header Cache-Control "public, no-transform";
    proxy_pass http://local.app.integreatconsult.com;
 }

location ~* \.(js|css)$ {
    expires 15m;
    add_header Cache-Control "public, no-transform";
    proxy_pass http://local.app.integreatconsult.com;
}