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[備忘録]Docker for windowsで急にビルドできなくなった。

Last updated at Posted at 2020-12-25

#ビルドできない

いつも通り、Docker for windowsでDockerfileを使ってUbuntuを使おうと思ったら、
エラーが出てビルドできなかった。
調べるが、あまり出で来なかったので、備忘録として残しておきます。
大雑把な環境は以下の通りです。
・Windows 10 pro
・WSL2 (ubuntu18.04)
・Docker for windows

###ビルド

docker build -f ./Dockerfile -t test .

###エラー


failed to solve with frontend dockerfile.v0: failed to create llb definition: failed to authorize: rpc error: code = unknown desc = failed to fetch anonymous token: get https://auth.docker.io/token?scope=repository%3alibrary%2fubuntu%3apull&service=registry.docker.io: dial tcp: lookup auth.docker.io on [::1]:53: read udp [::1]:37977->[::1]:53: read: connection refused

##解決
Docker for windowsを開き、
設定のDocker Engineの中を以下のように変更し、dockerをrestartしたら治りました。

変更前
{
  "registry-mirrors": [],
  "insecure-registries": [],
  "debug": false,
  "experimental": false,
  "features": {
    "buildkit": true
  }
}
変更後
{
  "registry-mirrors": [],
  "insecure-registries": [],
  "debug": false,
  "experimental": false
}

参考にした記事は、こちらです。

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