Slow export performance, more severe inside docker

Hi,

I am seeing very slow poetry export performance inside docker.
I've used the poetry sources as reference.

poetry git:(master) ✗ git clone https://github.com/python-poetry/poetry.git

poetry git:(master) ✗ time poetry export --without-hashes
(snipped)
poetry export --without-hashes 1.69s user 0.15s system 86% cpu 2.129 total

➜ poetry git:(master) ✗ cat Dockerfile

# syntax = docker/dockerfile:1.2
#
# Build stage
#

FROM python:3.10 AS builder
WORKDIR /app

# Install Poetry
RUN curl -sSL https://install.python-poetry.org | python - -y
ENV PATH="/root/.local/bin:$PATH"

COPY pyproject.toml .
COPY poetry.lock .

RUN poetry export -f requirements.txt --without-hashes

➜ poetry git:(master) ✗ time docker build . --no-cache
[+] Building 38.2s (14/14) FINISHED
(snipped)
=> [3/6] RUN curl -sSL https://install.python-poetry.org | python - -y 19.2s
(snipped)
=> [6/6] RUN poetry export -f requirements.txt --without-hashes 15.4s

With my private reference which I cannot share, I've seen local invocations taking 10-15 seconds and in-docker invocations taking up to 90 seconds for what should ostensibly be a direct translation from one file format to another.

The report names no repository files or tests. Start by reproducing poetry export --without-hashes locally and in the supplied Docker build, then inspect the export plugin's execution path to locate the slowdown. Done means identifying and addressing the performance difference with a regression check for export timing or behavior.