function integrated with rekognition and use line-bot-sdk as client input.
$ cd path/to/project
$ pip install -r requirements.txt -t .
After implement to AWS lambda and integrated with API Gateway, setup os environment of server endpoint and configuration source.
$ aws lambda update-function-configuration --function-name LINE-Chatbot \
--environment "Variables={
Bucket=bucket_name, \
CollectionId=collection_id, \
aws_access_key_id=aws_key,
aws_secret_access_aws_secret, \
channel_access_token=line_token, \
channel_secret=line_secret, \
region_name=region}"