Dockerfile.lambda

# Dockerfile.lambda — Container image for AWS Lambda deployment.
#
# Re-uses the production wheel from the main Dockerfile's builder stage and
# layers it on top of the official AWS Lambda Python 3.11 base image, which
# bundles the Lambda Runtime Interface Client (RIC).
#
# Build:
#   docker build -f Dockerfile.lambda -t meapy:lambda .
#
# Modify when:
#   - Bumping the Lambda runtime base image
#   - Changing the handler entrypoint

FROM python:3.11-slim AS base

ENV PIP_NO_CACHE_DIR=1
WORKDIR /build
COPY pyproject.toml README.md ./
COPY src/ ./src/
RUN pip install --upgrade pip build \
 && pip wheel --wheel-dir /wheels .

FROM public.ecr.aws/lambda/python:3.11

COPY --from=base /wheels/*.whl /tmp/
RUN pip install /tmp/*.whl && rm -rf /tmp/*.whl

COPY src/meapy/lambda_handler.py ${LAMBDA_TASK_ROOT}/

CMD ["lambda_handler.handler"]