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Hugo Bustamante
Asked: 2022-10-04 14:18:08 +0800 CST 2022-10-04 14:18:08 +0800 CST

I have a doubt about dockerfile, what does the AS keyword mean?

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I have a little doubt, it is that I have a dockerfile and I find that it starts with the following image:

FROM node:16-alpine AS development

I don't understand what the AS keyword means, I see that it refers to development but I don't understand what that means. I would really appreciate it if anyone knows what it means.

imagen

1 Answers

  1. Best Answer

    This is used in constructions that have multiple stages (multi-stage) . Thus, each stage you put an alias and it is easier to indicate what to use of each thing. We don't know the content of your dockerfile, but there may be others FROMthat refer to itdevelopment

    ... --from=development
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