我正在研究Docker's website上的教程，并且无法像所描述的那样让端口映射。
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暴露我的Dockerfile中的端口并运行EXPOSE 80来启动应用程序。代码直接从教程中复制，但为了完整起见，烧瓶服务器以：
docker run -p 4000:80 containername当我在浏览器中访问localhost：4000或卷曲它时，我发现该网站无法访问。