more minimal

deployment/lambda/extractor_and_loader/docker/Dockerfile

@@ -1,29 +1,44 @@
-# Start from lightweight base image
+# ----------- 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 only what's needed to resolve dependencies
+COPY pyproject.toml poetry.lock ./
+
+# Export main dependencies only
+RUN poetry export -f requirements.txt --without-hashes --only main -o requirements.txt
+
+# Install dependencies to /python (Lambda expects this path)
+RUN pip install --no-deps -r requirements.txt --target /python
+
+
+# ----------- Runtime Stage (Slim and Clean) -----------
 FROM python:3.12-slim
 
-# Set environment vars to reduce image size and avoid bytecode
 ENV PYTHONDONTWRITEBYTECODE=1 \
     PYTHONUNBUFFERED=1 \
     PIP_NO_CACHE_DIR=1
 
-# Install required system packages and Lambda RIC
-RUN apt-get update && apt-get install -y curl \
-    && pip install awslambdaric \
-    && apt-get clean && rm -rf /var/lib/apt/lists/*
+# Install Lambda Runtime Interface Client (RIC)
+RUN pip install awslambdaric
+
+# Copy app dependencies from builder
+COPY --from=builder /python /var/task
 
 # Set working directory
 WORKDIR /var/task
 
-# Copy Poetry files and export dependencies
-COPY pyproject.toml poetry.lock ./
-RUN pip install poetry \
-    && poetry export -f requirements.txt --without-hashes --only main -o requirements.txt \
-    && pip install -r requirements.txt --target
-
-# Copy app code
+# Copy application code
 COPY etl/ etl/
 COPY deployment/lambda/extractor_and_loader/docker/app.py .
 
 # Lambda entrypoint
-ENTRYPOINT ["/usr/local/bin/python3", "-m", "awslambdaric"]
+ENTRYPOINT ["python3", "-m", "awslambdaric"]
 CMD ["app.handler"]