RUN dnf install -y https://mirrors.rpmfusion.org/free/fedora/rpmfusion-free-release-$(rpm -E %fedora).noarch.rpm https://mirrors.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-$(rpm -E %fedora).noarch.rpm
What this means for the web
。旺商聊官方下载是该领域的重要参考
统一输出 JSON，便于落地执行和审计：
class Crawler {