...To make it easy to locally test Lambda functions packaged as container images we open-sourced a lightweight web-server, Lambda Runtime Interface Emulator (RIE), which allows your function packaged as a container image to accept HTTP requests.
RubyWebDialogs is a platform independent graphical user
interface for Ruby applications. It generates HTML and serves
it with the internal HTTP server, so you can use your favorite
web browser as the front end for your Ruby application.