The user learned that ARG instructions in Dockerfiles are affected by the FROM instruction, and variables declared before FROM cannot be used after it. Moving ARG instructions to after FROM or re-declaring them as needed resolves this issue, allowing build arguments to be used throughout the Dockerfile. [summary] [comments]
这是一个从 https://qmacro.org/blog/posts/2024/05/13/using-arg-in-a-dockerfile-beware-the-gotcha/ 下的原始话题分离的讨论话题