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Update compose-file-v2.md

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Frank Lemanschik 2019-03-16 03:43:19 +01:00 committed by GitHub
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@ -197,9 +197,9 @@ or a list:
- buildno=1 - buildno=1
- gitcommithash=cdc3b19 - gitcommithash=cdc3b19
> **Note**: if you specify `ARG` in your Dockerfile befor the `FROM` instruction > **Note**: if you specify `ARG` in your Dockerfile befor the `FROM` instruction,
> then the `ARG` will not be available in the build instructions under `FROM` > then the `ARG` will not be available in the build instructions under `FROM`.
> if you need a argument in both places simply place it again under the `FROM` instruction > if you need a argument in both places, simply place it again under the `FROM` instruction.
You can omit the value when specifying a build argument, in which case its value You can omit the value when specifying a build argument, in which case its value
at build time is the value in the environment where Compose is running. at build time is the value in the environment where Compose is running.