Prickles in a Pickle
A frontend is a container image that BuildKit runs to convert your build definition (Dockerfile, YAML, JSON, HCL, whatever) into LLB. The frontend receives the build context and the build file through the BuildKit Gateway API, and returns a serialized LLB graph.
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（一）免除承运人对旅客应当承担的法定责任；
// Munge header endianness