Update README.md

Author: lmangani

README.md

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 # chDB on AWS Lambda
 
 > Running chdb in a lambda function for fun a profit!
 
 This guide is based on [this article](https://medium.com/@skalyani103/python-on-aws-lambda-using-docker-images-5740664c54ca)
 
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 ## Upload Docker image on ECR and Lambda
 Lambda function continers must be hosted on the AWS Elastic Container Registry.