Modern Container Builds and WebSocket APIs Come to AWS SAM

SAM CLI has always been good at taking the grunt work out of serverless deployments. You define your functions and APIs in a template, and SAM handles the CloudFormation, the packaging, the deployment. It works. Until recently, two things were missing. BuildKit support for container image builds. And a SAM resource type for WebSocket APIs. Both are now shipped. Neither breaks existing templates. Let's walk through it. BuildKit Support for Image-Based Lambda Functions The problem When you run sam