serverless.yml

service: aws-node-screenshot-to-s3
frameworkVersion: '2'

provider:
  name: aws
  stage: dev
  region: us-east-1
  runtime: nodejs12.x

# Specify your bucket name here
custom:
  bucketName: "your-bucket-name"

functions:
  screenshotToS3:
    handler: handler.screenshotToS3
    environment:
      BUCKET_NAME: ${self:custom.bucketName}

# Create the Bucket and Bucket Policy for the Screenshots
resources:
  Resources:
    ImageBucket:
      Type: AWS::S3::Bucket
      Properties:
        AccessControl: PublicRead
        BucketName: ${self:custom.bucketName}
    ImageBucketPolicy:
      Type: AWS::S3::BucketPolicy
      Properties:
        Bucket: !Ref ImageBucket
        PolicyDocument:
          Statement:
            - Action:
                - s3:GetObject
              Effect: Allow
              Principal: "*"
              Resource: !Sub arn:aws:s3:::${ImageBucket}/*
            - Action:
                - s3:PutObject
              Effect: Allow
              Principal:
                AWS:
                 - !Sub arn:aws:iam::${AWS::AccountId}:role/aws-node-screenshot-to-s3-dev-us-east-1-lambdaRole
              Resource: !Sub arn:aws:s3:::${ImageBucket}/*