Serverless container deploy

when using images (container docker image in AWS ECR) for functions, not able to configure trigger events. It says error message as below and nothing has been added in trigger even if the deployment is successful.

Serverless: Configuration warning at ‘functions[‘compute-singing-quotient-and-process-v2’]’: unrecognized property ‘event’
Serverless: Learn more about configuration validation here:

Please help me in configuring events incase fo using docker image for functions deployment. thanks in advance.