诗歌在 docker 中被覆盖，我不明白为什么 - 你能发现问题吗？

Question

这是我尝试在 docker 容器中直接运行 poetry（我在故障排除时放弃了 PATH）后的错误：

Error response from daemon: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: exec: "~/.local/share/pypoetry/venv/bin/poetry": stat ~/.local/share/pypoetry/venv/bin/poetry: no such file or directory: unknown

Dockerfile：

FROM python:3.10

# to run poetry directly as soon as it's installed
ENV PATH="/root/.local/bin:$PATH"

# INSTALL POETRY
RUN apt-get update \
    && apt-get install -y curl \
    && curl -sSL https://install.python-poetry.org | python3 - 

# set work directory
WORKDIR /app

# Install dependencies
COPY poetry.lock pyproject.toml /app/
RUN ~/.local/share/pypoetry/venv/bin/poetry install --no-root

# copy files to Container
COPY ./. /app
CMD ["~/.local/share/pypoetry/venv/bin/poetry", "run", "uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]

docker-compose.yml

# Docker compose file for nginx and letsencrypt
version: "3.10"
services:
  fastapi:
    build:
      context: .
      dockerfile: Dockerfile
    container_name: fastapi
    ports:
      - "80:80"
      - "443:443"
    volumes:
      - .:/app

奇怪的是，poetry 实际上会首先构建和安装所有这些依赖项，我看着它们被安装。 然后，当我尝试在 cmd 行使用 poetry 时，构建错误会产生上述错误。 突然在构建的那一刻，诗歌装置不见了？

Answer 1

您使用的是CMD的 JSON 数组形式。 这不会运行 shell，也不会进行任何类型的变量扩展。 特别是， ~引用当前用户的主目录是 shell 提供的便利，但由于您没有在此处运行 shell，系统反而将其解释为查找当前目录的子目录，字面意思是~ 。

最短的解决方案是在这里拼出绝对路径

CMD ["/root/.local/share/pypoetry/venv/bin/poetry", "run", "uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]
#     ^^^^^ explicitly spell out user's home directory

您尝试早点设置$PATH ，这里的另一种方法可能是将 Poetry 虚拟环境添加到$PATH 。

ENV PATH="/root/.local/bin:/root/.local/share/pypoetry/venv/bin:$PATH"
#                      add ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

...

RUN poetry install --no-root
CMD ["poetry", "run", "uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]

看起来可以使用pip安装 Poetry，在这种情况下，您可以在虚拟环境之外安装它，或者poetry export到requirements.txt文件，您可以更直接地RUN pip install -r到图像的“系统”Python。

Answer 2

$HOME目录是您设置的工作目录。 因此，当您执行RUN ~/.local/share/pypoetry/venv/bin/poetry时，完整路径是app/.local/share/pypoetry/venv/bin/poetry应该是root/.local/share/pypoetry/venv/bin/poetry 。

定义完整路径或将root目录设置为工作目录