Dockerfile

FROM python:3.12-slim

WORKDIR /app

# System deps needed by some Python packages
RUN apt-get update && apt-get install -y --no-install-recommends \
    curl \
    && rm -rf /var/lib/apt/lists/*

# Install Poetry (pinned for reproducibility)
RUN pip install --no-cache-dir poetry==1.8.2

# Copy dependency files first (layer caching)
COPY pyproject.toml poetry.lock ./

# Install only production deps, no virtualenv needed inside container
RUN poetry config virtualenvs.create false \
    && poetry install --only main --no-interaction --no-ansi

# Copy the rest of the application
COPY . .

# ENTRYPOINT is python — CMD is overridden per Step Functions step
ENTRYPOINT ["python"]
CMD ["main.py"]