FROM public.ecr.aws/lambda/python:3.9 # Install the function's dependencies using file requirements.txt # from your project folder. # The AWS base images provide the following environment variables: # LAMBDA_TASK_ROOT=/var/task # LAMBDA_RUNTIME_DIR=/var/runtime COPY requirements.txt . RUN pip3 install -r requirements.txt --target "${LAMBDA_TASK_ROOT}" # Copy function code COPY app.py ${LAMBDA_TASK_ROOT} # Set the CMD to your handler (could also be done as a parameter override outside of the Dockerfile) CMD [ "app.handler" ]