Dockerfile

FROM python:3.11-bookworm as builder

RUN pip install poetry==1.7.1

ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    POETRY_NO_INTERACTION=1 \
    POETRY_VIRTUALENVS_IN_PROJECT=1 \
    POETRY_VIRTUALENVS_CREATE=1 \
    POETRY_CACHE_DIR=/tmp/poetry_cache

WORKDIR /app

COPY pyproject.toml poetry.lock ./
RUN touch README.md

RUN --mount=type=cache,target=$POETRY_CACHE_DIR poetry install --without=dev,test --no-root

FROM python:3.11-slim-bookworm as runtime

RUN apt-get update && apt-get install libpq5 -y

ENV VIRTUAL_ENV=/app/.venv \
    PATH="/app/.venv/bin:$PATH"

COPY --from=builder ${VIRTUAL_ENV} ${VIRTUAL_ENV}

COPY app ./app

COPY main.py /

ENTRYPOINT ["python", "main.py"]

EXPOSE 8000