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BYOB also can't be used with async iteration or TransformStreams, so developers who want zero-copy reads are forced back into the manual reader loop.
。爱思助手下载最新版本对此有专业解读
BuildKit is a general-purpose, pluggable build framework. It can produce OCI images, yes, but also tarballs, local directories, APK packages, RPMs, or anything else you can describe as a directed acyclic graph of filesystem operations. The Dockerfile is just one frontend. You can write your own.
return (PAGESZ - sizeof(struct page_info)) / sizes[classno];