FROM public.ecr.aws/lambda/python:3.10

# Set working directory (Lambda task root)
WORKDIR /var/task

# -----------------------------
# Copy requirements FIRST (for Docker layer caching)
# -----------------------------
COPY backend/address2UPRN/handler/requirements.txt .

# Install dependencies into Lambda runtime
RUN pip install --no-cache-dir -r requirements.txt

# -----------------------------
# Copy application code
# -----------------------------
COPY utils/ utils/
COPY backend/address2UPRN/main.py .

# -----------------------------
# Lambda handler
# -----------------------------
CMD ["main.handler"]