Imports github.com/ashwanthkumar/slack-go-webhook github.com/aws/aws-lambda-go/lambda github.com/aws/aws-sdk-go/aws/arn github.com/aws/aws-sdk-go/aws/session github.com/aws/aws-sdk-go/service/ecs github.com/kelseyhightower/envconfig Standard library imports encoding/json fmt os strconv time