How we can update the existing docker image to ECR?

[Architectshwet]

How we can update the existing docker image to ECR? Now after our first deployment we are going to have a docker image in ECR which aws lambda will use for deployment. But now suppose we have updated our code and then updated the docker image. Then how we can push that updated image to the ECR?

[philschmid]

You can create a simple bash script to build and push your image or use cdk instead of serverless framework