self.writer.writeheader()
When you write a Dockerfile, the Dockerfile frontend parses it and emits LLB. But nothing in BuildKit requires that the input be a Dockerfile. Any program that can produce valid LLB can drive BuildKit.，更多细节参见快连下载安装
for (int i = 0; i < n; i++) {，推荐阅读夫子获取更多信息
The agency has closed the deal with OpenAI, shortly after President Donald Trump ordered all government agencies to stop using Claude and any other Anthropic services. If you’ll recall, US Defense Secretary Pete Hegseth previously threatened to label Anthropic “supply chain risk” if it continues refusing to remove the guardrails on its AI, which are preventing the technology to be used for mass surveillance against Americans and in fully autonomous weapons.，这一点在51吃瓜中也有详细论述