🥷
Docker上でPoetryをインストールしようとしたらはまった話
よく読めばすぐわかる問題だったけど、こういう時遠回りしちゃうんだよなー
後々考えた適切と思われる解析のやり方と一緒に、備忘録として残しておく
前提
対象のDockerfile
Dockerfile
FROM python:3.11.9
ENV PYTHONUNBUFFERED=1
WORKDIR /app
# poetryのインストール
RUN curl -sSL https://install.python-poetry.org | python3
COPY pyproject.toml* poetry.lock* ./
RUN poetry config virtualenvs.in-project true
RUN poetry install --no-dev
COPY src/ /app
# entrypoint
ENTRYPOINT ["poetry", "run", "uvicorn", "app.main:app", "--host", "0.0.0.0", "--reload"]
現象
ログ
Docker上でpoetryをインストールするDockerfileをビルド中にエラーを吐いた
RUN poetry config virtualenvs.in-project trueした時に
poetry: not found poetryがないと言っていらっしゃる
docker build ./ -t test_container
[+] Building 1.7s (9/11) docker:desktop-linux
=> [internal] load .dockerignore 0.0s
=> => transferring context: 107B 0.0s
=> [internal] load build definition from Dockerfile 0.0s
=> => transferring dockerfile: 547B 0.0s
=> [internal] load metadata for docker.io/library/python:3.11.9 1.6s
=> [1/7] FROM docker.io/library/python:3.11.9@sha256:e453eb723bc8ecac7a797498f9a5915d13e567620d48d 0.0s
=> [internal] load build context 0.0s
=> => transferring context: 1.49kB 0.0s
=> CACHED [2/7] WORKDIR /src 0.0s
=> CACHED [3/7] RUN curl -sSL https://install.python-poetry.org | python3 0.0s
=> CACHED [4/7] COPY pyproject.toml* poetry.lock* ./ 0.0s
=> ERROR [5/7] RUN poetry config virtualenvs.in-project true 0.1s
------
> [5/7] RUN poetry config virtualenvs.in-project true:
0.108 /bin/sh: 1: poetry: not found
------
Dockerfile:12
--------------------
10 | COPY pyproject.toml* poetry.lock* ./
11 |
12 | >>> RUN poetry config virtualenvs.in-project true
13 | RUN poetry install --no-dev
14 |
--------------------
ERROR: failed to solve: process "/bin/sh -c poetry config virtualenvs.in-project true" did not complete successfully: exit code: 127
原因
原因想定
考えられるのは
- Pathが通ってない
- インストールが正常にいっているように見えるがこけてる
- などなど
何にせよログをよく読んだ方がいいね
build中のログを吐かせる方法は以下
（キャッシュで何を試しているかわからなくなる可能性もあるから、--no-cacheオプションを入れているよ）
docker build ./ -t test_container --no-cache --progress plain
検証
docker build ./ -t test_container --no-cache --progress plain
#0 building with "desktop-linux" instance using docker driver
#1 [internal] load build definition from Dockerfile
#1 transferring dockerfile: 547B done
#1 DONE 0.0s
#2 [internal] load .dockerignore
#2 transferring context: 107B done
#2 DONE 0.0s
#3 [internal] load metadata for docker.io/library/python:3.11.9
#3 DONE 0.9s
#4 [1/7] FROM docker.io/library/python:3.11.9@sha256:e453eb723bc8ecac7a797498f9a5915d13e567620d48dcd3568750bac3b59f31
#4 DONE 0.0s
#5 [2/7] WORKDIR /src
#5 CACHED
#6 [internal] load build context
#6 transferring context: 1.49kB done
#6 DONE 0.0s
#7 [3/7] RUN curl -sSL https://install.python-poetry.org | python3
#7 0.477 Retrieving Poetry metadata
#7 0.734
#7 0.739 # Welcome to Poetry!
#7 0.739
#7 0.739 This will download and install the latest version of Poetry,
#7 0.739 a dependency and package manager for Python.
#7 0.739
#7 0.739 It will add the `poetry` command to Poetry's bin directory, located at:
#7 0.739
#7 0.739 /root/.local/bin
#7 0.739
#7 0.739 You can uninstall at any time by executing this script with the --uninstall option,
#7 0.739 and these changes will be reverted.
#7 0.739
#7 0.740 Installing Poetry (1.8.3)
#7 0.740 Installing Poetry (1.8.3): Creating environment
#7 3.053 Installing Poetry (1.8.3): Installing Poetry
#7 32.19 Installing Poetry (1.8.3): Creating script
#7 32.19 Installing Poetry (1.8.3): Done
#7 32.19
#7 32.19 Poetry (1.8.3) is installed now. Great!
#7 32.19
#7 32.19 To get started you need Poetry's bin directory (/root/.local/bin) in your `PATH`
#7 32.19 environment variable.
#7 32.19
#7 32.19 Add `export PATH="/root/.local/bin:$PATH"` to your shell configuration file.
#7 32.19
#7 32.19 Alternatively, you can call Poetry explicitly with `/root/.local/bin/poetry`.
#7 32.19
#7 32.19 You can test that everything is set up by executing:
#7 32.19
#7 32.19 `poetry --version`
#7 32.19
#7 DONE 32.3s
#8 [4/7] COPY pyproject.toml* poetry.lock* ./
#8 DONE 0.0s
#9 [5/7] RUN poetry config virtualenvs.in-project true
#9 0.266 /bin/sh: 1: poetry: not found
#9 ERROR: process "/bin/sh -c poetry config virtualenvs.in-project true" did not complete successfully: exit code: 127
------
> [5/7] RUN poetry config virtualenvs.in-project true:
0.266 /bin/sh: 1: poetry: not found
------
Dockerfile:12
--------------------
10 | COPY pyproject.toml* poetry.lock* ./
11 |
12 | >>> RUN poetry config virtualenvs.in-project true
13 | RUN poetry install --no-dev
14 |
--------------------
ERROR: failed to solve: process "/bin/sh -c poetry config virtualenvs.in-project true" did not complete successfully: exit code: 127
これを見ると丁寧に、
To get started you need Poetry's bin directory (/root/.local/bin) in your
PATHenvironment variable.
Addexport PATH="/root/.local/bin:$PATH"to your shell configuration file.
Alternatively, you can call Poetry explicitly with/root/.local/bin/poetry.
You can test that everything is set up by executing:poetry --version
(DeeepL翻訳)
PATH環境変数にPoetryのbinディレクトリ（/root/.local/bin）が必要です。
シェルの設定ファイルにexport PATH=「/root/.local/bin:$PATH 」を追加してください。
あるいは、/root/.local/bin/poetryでPoetryを明示的に呼び出すこともできます。
すべての設定が完了したことを確認するには、以下を実行してください： poetry --version
て書いてあるんだよね。それができてなさそうなので、「Pathが通ってない」が原因ということかな？
対応
Dockerfile修正
そんなに難しい内容ではないので、Dockerfileを修正します。
poetryをインストール後、poetryのコメントにあるように/root/.local/binをPATHに追加してあげまあす。
Dockerfile
FROM python:3.11.9
ENV PYTHONUNBUFFERED=1
WORKDIR /app
# poetryのインストール
RUN curl -sSL https://install.python-poetry.org | python3
ENV PATH /root/.local/bin # ここ追加
COPY pyproject.toml* poetry.lock* ./
RUN poetry config virtualenvs.in-project true
RUN poetry install --no-dev
COPY src/ /app
# entrypoint
ENTRYPOINT ["poetry", "run", "uvicorn", "app.main:app", "--host", "0.0.0.0", "--reload"]
結果
よさそう
docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
test_container latest 42020db5134c 6 seconds ago 1.21GB
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