Dockerfile explanation

[azro352]

Hi,

I understand the purpose of the project to build a docker with not only mlflow but also sql, s3, ... dependencies, but I'm unsure about
why the Dockerfile is like it is

I understand the multi-stage docker purpose, but here why can't we just install the dependencies like the following, I don't understnad the lib installation part not the Install build-essential to compile extensions comment ?

FROM python:3.9.16-slim

WORKDIR /mlflow/

COPY pyproject.toml poetry.toml poetry.lock /mlflow/

RUN python -m pip install --upgrade pip
RUN pip install poetry wheel &&  poetry install --no-root --no-dev

ENV PATH=/mlflow/.venv/bin:$PATH
ENV PYTHONUNBUFFERED 1

CMD mlflow server --backend-store-uri sqlite:///:memory --default-artifact-root ./mlruns --host=0.0.0.0 --port=5000

Thanks