always-copy creating a symlink in docker build

[postera-james]

• Poetry version: 1.4.2
• Python version: 3.10.11
• OS version and name: ubuntu 20.04 (docker)
• pyproject.toml: https://gist.github.com/postera-james/d67584e75b3e2291cadf801192dbcdd6

• I am on the latest stable Poetry version, installed using a recommended method.
• I have searched the issues of this repo and believe that this is not a duplicate.
• I have consulted the FAQ and blog for any relevant entries or release notes.
• If an exception occurs when executing a command, I executed it again in debug mode (-vvv option) and have included the output below.

Issue

I have written a multi-stage Dockerfile based off some of the discussions found on this repo's issues.

# syntax=docker/dockerfile:1.4
FROM ubuntu:20.04 as base-build-stage

WORKDIR /example

RUN DEBIAN_FRONTEND=noninteractive apt update && apt-get install -y --no-install-recommends tzdata

RUN --mount=type=cache,target=/var/cache/apt apt update  && apt install -y software-properties-common wget libxrender1 libxext6 libsm6 git build-essential curl \ 
    && add-apt-repository -y 'ppa:deadsnakes/ppa' \
    &&  apt install  -y python3.10 python3.10-dev python3.10-distutils \
    && curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py \
    && python3.10 get-pip.py \
    && rm get-pip.py \
    && python3.10 -m pip install --upgrade requests 


ENV POETRY_VERSION=1.4.2 \
    POETRY_HOME="/opt/poetry" \
    POETRY_VIRTUALENVS_IN_PROJECT=true \
    POETRY_NO_INTERACTION=1 \
    PYSETUP_PATH="/opt/pysetup" \
    VENV_PATH="/example/.venv" \
    POETRY_VIRTUALENVS_OPTIONS_ALWAYS_COPY=true 
ENV PATH="$POETRY_HOME/bin:$VENV_PATH/bin:$PATH"

RUN curl -sSL https://install.python-poetry.org | python3.10 - \
    && python3.10 -m pip install poethepoet \
    && poetry config --list

COPY ./pyproject.toml  ./

RUN --mount=type=cache,target=/root/.cache \
    poetry install --no-root   

RUN ls -lha /example/.venv/bin 

My eventual goal is to copy the virtualenv over to another stage, so I'm setting POETRY_VIRTUALENVS_OPTIONS_ALWAYS_COPY=true.

I expected that this would mean the venv would contain an executable, not a symlink.
The poetry config --list returns that the setting is reflected:

#13 11.90 cache-dir = "/root/.cache/pypoetry"
#13 11.90 experimental.new-installer = true
#13 11.90 experimental.system-git-client = false
#13 11.90 installer.max-workers = null
#13 11.90 installer.modern-installation = true
#13 11.90 installer.no-binary = null
#13 11.90 installer.parallel = true
#13 11.90 virtualenvs.create = true
#13 11.90 virtualenvs.in-project = true
#13 11.90 virtualenvs.options.always-copy = true
#13 11.90 virtualenvs.options.no-pip = false
#13 11.90 virtualenvs.options.no-setuptools = false
#13 11.90 virtualenvs.options.system-site-packages = false
#13 11.90 virtualenvs.path = "{cache-dir}/virtualenvs"  # /root/.cache/pypoetry/virtualenvs
#13 11.90 virtualenvs.prefer-active-python = false
#13 11.90 virtualenvs.prompt = "{project_name}-py{python_version}"

The last RUN indicates however that it's just a symlink still:

#16 0.334 lrwxrwxrwx 1 root root   19 May  3 22:26 python -> /usr/bin/python3.10
#16 0.334 lrwxrwxrwx 1 root root    6 May  3 22:26 python3 -> python
#16 0.334 lrwxrwxrwx 1 root root    6 May  3 22:26 python3.10 -> python

Hope I'm not missing anything obvious!

[dimbleby]

duplicate #5906

[postera-james]

I tested without using envs and it works, thanks for the quick turnaround.

[github-actions]

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