You can’t edit Lambda code in the console when you deploy a Docker image to Lambda.

As far as flexibility, while there have been third party libraries that let you deploy your standard Node/Express, .Net/ASP, Python/Flask app to Lambda, now there is an official first party solution

https://github.com/awslabs/aws-lambda-web-adapter

And as far as ECS, it is stupid simple

I’ve used this for years

https://github.com/1Strategy/fargate-cloudformation-example/...