Dockerfile

FROM python:3.12.1-bookworm as builder

ENV PYTHONFAULTHANDLER=1 \
    PYTHONUNBUFFERED=1 \
    PYTHONHASHSEED=random \
    PYTHONDONTWRITEBYTECODE=1 \
    # pip:
    PIP_NO_CACHE_DIR=off \
    PIP_DISABLE_PIP_VERSION_CHECK=on \
    PIP_DEFAULT_TIMEOUT=100 \
    # poetry:
    POETRY_VERSION=1.7.1 \
    POETRY_NO_INTERACTION=1 \
    POETRY_VIRTUALENVS_IN_PROJECT=1 \
    POETRY_VIRTUALENVS_CREATE=1 \
    PATH="$PATH:/root/.local/bin"

WORKDIR /app

# install poetry
RUN pip install pipx
RUN pipx install "poetry==$POETRY_VERSION"
RUN pipx ensurepath

# install dependencies
COPY pyproject.toml poetry.lock ./
RUN poetry install --without dev --no-root --no-ansi

# next stage
FROM python:3.12.1-slim-bookworm as runtime

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

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

COPY . .

# for demo purposes, always run migrations then start the app
ENTRYPOINT ["/bin/sh", "-c" , "alembic upgrade head && python -m run"]