我有Dockerfile来为Django项目构建图像，该项目使用Python 3.11并在诗歌环境中运行（请参阅下面的内容）。问题是，当我尝试下载get-pip.py文件并使用Python运行它时，它说没有这样的文件或目录，但它应该在Dockerfile所在的同一个目录中。我不知道，但为什么不在那里？
P.S.我使用的是WSL 2（Ubuntu 20.04）的docker desktop，Dockerfile在project目录下（poetry.lock和pyproject.toml文件所在的目录），/website是django project所在的目录。

# Download image of Ubuntu 20.04
FROM ubuntu:20.04

# To prevent interactive dialogs
ENV TZ=Europe \
    DEBIAN_FRONTEND=noninteractive

# Update and install necessary packages
RUN apt-get update \
# Install necessary packages to allow compilation of source code
    && apt-get install -y --no-install-recommends \
    tzdata \
    build-essential \
    checkinstall \
    libreadline-gplv2-dev \
    libncursesw5-dev \
    libssl-dev \
    libsqlite3-dev \
    tk-dev \
    libgdbm-dev \
    libc6-dev \
    libbz2-dev \
    software-properties-common \
# Install python 3.11
    && apt-get update \
    && add-apt-repository ppa:deadsnakes/ppa \
    && apt-get install -y --no-install-recommends \
    python3.11

# Install pip for Python 3.11
RUN curl -sS -O https://bootstrap.pypa.io/get-pip.py | python3.11
# THERE'S AN ERROR
RUN python3.11 get-pip.py

# Install poetry
ENV POETRY_VERSION 1.4.2
RUN python3.11 -m pip install "poetry==$POETRY_VERSION"

# Install dependencies
RUN poetry install

# Run poetry env
ENTRYPOINT ["poetry", "shell"]

# Go to website folder
WORKDIR /website

# Run Django server
CMD ["python3.11", "manage.py", "runserver"]