Build Lambda local with SAM CLI

 [1]. Requirements

 SAM CLI - [Install the SAM CLI](https://docs.aws.amazon.com/serverless-application-model/latest/developerguide/serverless-sam-cli-install.html)


* Node.js - [Install Node.js 12](https://nodejs.org/en/), including the NPM package management tool.

* For run locally: Docker - [Install Docker community edition](https://hub.docker.com/search/?type=edition&offering=community)

 [2]. Run lambda local 

# Invoking lambda function with event file
$ sam local invoke "HelloWorldFunction" -e event.json

* Run command API endpoint :

$ sam local start-api --parameter-overrides Stage=local
$ aws lambda invoke --function-name "HelloWorldFunction" --endpoint-url "http://127.0.0.1:3001" --no-verify-ssl out.txt

[3].  Deploy cloud (dev)

* Create package and edit template.yaml using AWS S3 location resources.
$ sam package --template-file template.yaml --s3-bucket test-lambda-upload --output-template-file deploy-template.yaml

* Deploy to AWS 
  test-stack-name` is stack name. Should be changed on every deployment. 
$ sam deploy --template-file ./deploy-template.yaml --capabilities CAPABILITY_IAM --parameter-overrides Stage=dev --stack-name test-stack-name

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