survey-extraction/deployment/lambda/extractor_and_loader/docker/Dockerfile

# ----------- Build Stage (with Poetry) -----------
FROM python:3.12-slim as builder

ENV PIP_NO_CACHE_DIR=1

# Install Poetry
RUN pip install poetry

# Set working directory
WORKDIR /app

# Copy Poetry files and your source code
COPY pyproject.toml poetry.lock ./
COPY etl/ etl/

# Export main dependencies
RUN poetry export -f requirements.txt --without-hashes --only main -o requirements.txt

# Install into /python (Lambda expects this structure)
RUN pip install --no-deps -r requirements.txt --target /python

# Optionally: strip cache, pyc, and tests to reduce size
RUN find /python -type d -name "tests" -exec rm -rf {} + \
    && find /python -type f -name "*.pyc" -delete


# ----------- Runtime Stage (Slim and Clean) -----------
FROM python:3.12-slim

ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    PIP_NO_CACHE_DIR=1

# Install Lambda RIC
RUN pip install awslambdaric

# Copy installed dependencies and app code from builder
COPY --from=builder /python /var/task
COPY --from=builder /app/etl /var/task/etl

# Set working directory
WORKDIR /var/task

# Copy Lambda handler
COPY deployment/lambda/extractor_and_loader/docker/app.py .

# Set Lambda entrypoint and handler
ENTRYPOINT ["python3", "-m", "awslambdaric"]
CMD ["app.handler"]