Add cache-control header for static nextcloud assets (fixes #65)

    proxy_pass http://nextcloud:80;

    include /etc/nginx/params/proxy_params;

  }

  location ~ (\.(?:css|js|woff2?|svg|gif)$|^/core/img/background.png$) {

    proxy_pass http://nextcloud:80;

    include /etc/nginx/params/proxy_params;

    add_header Cache-Control "public, max-age=15778463";

  }

}