Add dockerfile

Dockerfile

@@ -0,0 +1,13 @@
+# Dockerfile
+FROM public.ecr.aws/lambda/python:3.11
+
+# Copy function code
+COPY . ${LAMBDA_TASK_ROOT}
+
+# Install dependencies
+RUN pip install -r requirements.txt --target "${LAMBDA_TASK_ROOT}"
+
+# Run test cases as this saves the ML model in the container
+RUN pytest tests -s -v
+
+CMD ["lambda.lambda_handler"]