It’s great that you’re trying this, but in my experience Pulumi can take a while to run (especially if you’re doing stuff with databases or clusters etc) so could start to be expensive. My advice would be to run this in fargate or similar (if you’re trying to go down the serverless option) and maybe kick off the task from a lambda (if you’re trying to trigger it with events)

Just in case :

FROM public.ecr.aws/lambda/python:3.8

# Install the function's dependencies using file requirements.txt
# from your project folder.
RUN yum install -y tar gzip && \
    yum clean all

COPY requirements.txt pulumi-v3.44.2-linux-x64.tar ./
RUN  pip3 install -r requirements.txt --target "${LAMBDA_TASK_ROOT}"
RUN  tar -xvf ./pulumi-v3.44.2-linux-x64.tar --strip-components=1 -C /usr/local/bin
     

# Copy function code
COPY 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.lambda_handler" ]