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Proxy環境下でのDockerbuildをするためにやること

More than 3 years have passed since last update.

Docker Engine 1.9 からです。

Proxy配下にいると、build時にproxyを通らないとapt-getもyumも通りません。
かと言って、これに毎回 ENV http_proxy=XXX ってのを書き続けるのも心が折れます。

下記のようにしておくと、様々な環境下で動いてくれるので平和な気持ちでいられます。

ARG http_proxy
ARG https_proxy

ENV http_proxy=${http_proxy}
ENV https_proxy=${https_proxy}

で、build時に下記のようにコマンドを打ちます

% docker build --rm -t hoge \
  --build-arg http_proxy=${http_proxy} \
  --build-arg https_proxy=${https_proxy} .

きちんとproxyに渡って行きます!

平和!

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