update Dockerfile

Dockerfile

@@ -7,7 +7,7 @@ COPY requirements.txt ${LAMBDA_TASK_ROOT}
 RUN pip install -r requirements.txt
 
 # Copy function code
-COPY lambda_function.py ${LAMBDA_TASK_ROOT}
+COPY src/lambda_function.py ${LAMBDA_TASK_ROOT}
 
 # Set the CMD to your handler (could also be done as a parameter override outside of the Dockerfile)
 CMD [ "lambda_function.handler" ]