使用特定的非Python基础映像在docker文件中设置特定的Python版本

Question

我想在特定的基础映像上创建一个专门使用 python 3.5 的 docker 映像，该基础映像是 nvidia/cuda （9.0 基础映像），后者没有 python 环境。

我需要特定版本的原因是支持运行 cuda10.0 python3.5 和 gcc 版本 <7 以在同一个盒子上一起编译驱动程序

当我尝试构建 docker 环境（见下文）时，我总是会得到加载 python3.6 的系统更新文件

我运行的第一个版本（如下）运行一个安装 python 3.6 的系统更新依赖项，我尝试了许多变体来避免这种情况，但最终图像中总是以 3.6 结束。

欢迎任何关于使用 python3.5 运行此程序的建议

谢谢

FROM nvidia/cuda

RUN apt-get update && apt-get install -y libsm6 libxext6 libxrender-dev python3.5 python3-pip 

COPY . /app
WORKDIR /app

RUN pip3 install -r requirements.txt
ENTRYPOINT [ "python3" ]
CMD [ "app.py" ]

我尝试过的另一个变体（如下）是使用 virtualenv ，在这里我似乎无法强制使用 python 3.5 环境

FROM nvidia/cuda

RUN apt-get update && apt-get install -y --no-install-recommends libsm6 libxext6 libxrender-dev python3.5 python3-pip python3-virtualenv

ENV VIRTUAL_ENV=/opt/venv
RUN python3 -m virtualenv --python=/usr/bin/python3 $VIRTUAL_ENV
ENV PATH="$VIRTUAL_ENV/bin:$PATH"

COPY . /app
WORKDIR /app

RUN pip3 install -r requirements.txt
ENTRYPOINT [ "python3" ]
CMD [ "app.py" ]

Answer 1

你可以尝试使用conda。我使用了几个阶段来最小化最终容器并加速/缓存本地构建。

# first stage
FROM nvidia/cuda:11.1-base-ubuntu18.04 as builder
RUN apt-get update && apt-get install -y curl wget gcc build-essential

# install conda
RUN wget --quiet https://repo.anaconda.com/miniconda/Miniconda3-4.5.12-Linux-x86_64.sh -O ~/miniconda.sh && \
     /bin/bash ~/miniconda.sh -b -p /opt/conda

# create env with python 3.5
RUN /opt/conda/bin/conda create -y -n myenv python=3.5
    
# install requirements
WORKDIR /app
COPY requirements.txt /app
ENV PATH=/opt/conda/envs/myenv/bin:$PATH    
RUN pip install -r requirements.txt
RUN pip uninstall -y pip


####################
# second stage (note: FROM container must be the same as builder)
FROM nvidia/cuda:11.1-base-ubuntu18.04 as runner

# copy environment data including python
COPY --from=builder /opt/conda/envs/myenv/bin /opt/conda/envs/myenv/bin
COPY --from=builder /opt/conda/envs/myenv/lib /opt/conda/envs/myenv/lib
# do some env settings
ENV PATH=/opt/conda/envs/myenv/bin:$PATH
ENV LC_ALL=C.UTF-8
ENV LANG=C.UTF-8


####################
# final image
from runner
WORKDIR /app    
COPY ./run.py /app
CMD [ "python", "run.py"]

Answer 2

您可以从 PPA 安装并照常使用它：

FROM nvidia/cuda

RUN apt-get update && apt-get install -y --no-install-recommends software-properties-common \
    libsm6 libxext6 libxrender-dev curl \
    && rm -rf /var/lib/apt/lists/*

RUN echo "**** Installing Python ****" && \
    add-apt-repository ppa:deadsnakes/ppa &&  \
    apt-get install -y build-essential python3.5 python3.5-dev python3-pip && \
    curl -O https://bootstrap.pypa.io/get-pip.py && \
    python3.5 get-pip.py && \
    rm -rf /var/lib/apt/lists/*

COPY requirements.txt requirements.txt

RUN pip3.5 install -r requirements.txt

CMD ["python3.5", "app.py"]