python - Dockerfile 构建镜像错误 : Distribution contains no modules or packages for namespace package

Question

我正在尝试构建 python 项目的 docker 镜像。我的项目有一个依赖包，"my_package"需要先安装。这是一个命名空间包。
构建此 python 项目的 docker 镜像时出现此错误。我几乎可以用 RUN pip install XYZ 安装所有东西在 Dockerfile 中，但我不确定安装本地 python 命名空间包的正确方法是什么，这里，my_package ， 适本地。
我在一个不是命名空间包的普通 python 包上遵循了完全相同的步骤，它工作得非常好。在 Docker 中安装 python 命名空间包的任何指针？
Dockerfile:

ARG BASE_IMAGE=ubuntu:18.04

FROM ${BASE_IMAGE} AS compile-image
ARG BASE_IMAGE=ubuntu:18.04
ENV PYTHONUNBUFFERED TRUE

RUN --mount=type=cache,id=apt-dev,target=/var/cache/apt \
    apt-get update && \
    DEBIAN_FRONTEND=noninteractive apt-get install --no-install-recommends -y \
    ca-certificates \
    g++ \
    python3.8-dev \
    python3.8-distutils \
    python3.8-venv \
    openjdk-11-jre-headless \
    curl \
    && rm -rf /var/lib/apt/lists/* \
    && cd /tmp \
    && curl -O https://bootstrap.pypa.io/get-pip.py \
    && python3.8 get-pip.py

RUN python3.8 -m venv /home/venv

ENV PATH="/home/venv/bin:$PATH"

RUN update-alternatives --install /usr/bin/python python /usr/bin/python3.8 1
RUN update-alternatives --install /usr/local/bin/pip pip /usr/local/bin/pip3.8 1

COPY my_package/* /tmp/my_package/
WORKDIR /tmp/my_package/
RUN python setup.py install

Docker 构建命令:

$ DOCKER_BUILDKIT=1 docker build --file Dockerfile .

错误:

[+] Building 0.6s (12/12) FINISHED                                                                                                                                                 
 => [internal] load build definition from Dockerfile                                                                                                                          0.0s
 => => transferring dockerfile: 907B                                                                                                                                          0.0s
 => [internal] load .dockerignore                                                                                                                                             0.0s
 => => transferring context: 2B                                                                                                                                               0.0s
 => [internal] load metadata for docker.io/library/ubuntu:18.04                                                                                                               0.1s
 => [internal] load build context                                                                                                                                             0.0s
 => => transferring context: 3.11kB                                                                                                                                           0.0s
 => [compile-image 1/8] FROM docker.io/library/ubuntu:18.04@sha256:4bc3ae6596938cb0d9e5ac51a1152ec9dcac2a1c50829c74abd9c4361e321b26                                           0.0s
 => CACHED [compile-image 2/8] RUN --mount=type=cache,id=apt-dev,target=/var/cache/apt     apt-get update &&     DEBIAN_FRONTEND=noninteractive apt-get install --no-install  0.0s
 => CACHED [compile-image 3/8] RUN python3.8 -m venv /home/venv                                                                                                               0.0s
 => CACHED [compile-image 4/8] RUN update-alternatives --install /usr/bin/python python /usr/bin/python3.8 1                                                                  0.0s
 => CACHED [compile-image 5/8] RUN update-alternatives --install /usr/local/bin/pip pip /usr/local/bin/pip3.8 1                                                               0.0s
 => [compile-image 6/8] COPY my_package/* /tmp/my_package/                                                                                                                        0.0s
 => [compile-image 7/8] WORKDIR /tmp/my_package/                                                                                                                                0.0s
 => ERROR [compile-image 8/8] RUN python setup.py install                                                                                                                     0.4s
------
 > [compile-image 8/8] RUN python setup.py install:
#12 0.370 error in my_package setup command: Distribution contains no modules or packages for namespace package 'my_package'
------
executor failed running [/bin/sh -c python setup.py install]: exit code: 1

my_package structure:

my_package
├── [4.0K]  my_package
│   └── [  56]  __init__.py
└── [ 162]  setup.py

setup.py:

from setuptools import setup, find_packages

setup(
    name='my_package',
    version='0.0.1',
    namespace_packages=['my_package'],
    packages=find_packages()
)

__init__.py file:

__import__('pkg_resources').declare_namespace(__name__)

Answer 1

在您的 Dockerfile 中，您需要输入:

COPY my_package/. /tmp/my_package/