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Dockerfile ARG指令 | Go语言充电站 #103

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Shitaibin opened this issue Nov 10, 2020 · 0 comments
Open

Dockerfile ARG指令 | Go语言充电站 #103

Shitaibin opened this issue Nov 10, 2020 · 0 comments
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@Shitaibin
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https://lessisbetter.site/2020/11/10/dockerfile-arg/

Docker的文档关于ARG和FROM指令配合使用做了详细说明： ARG用于传入外部参数，定义在FROM指令前，FROM后的其他指令无法使用ARG定义的环境变量，如果FROM指令后的指令要使用ARG定义的值，需要在FROM后再次定义。如果FROM不使用定义的ARG，可以直接定义到FROM后。 传递参数定义在FROM前123ARG UBUNTU_VERSION=16.04FROM ubuntu:$&
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