Crafting and optimising Dockerfiles can be a bit tedious with the edit-build-test cycle, especially when optimising layer caching and working with multi-stage builds. Running commands or clicking buttons on every change—where is our hot reloading? An answer - Tilt. Tilt’s primary purpose is providing local dev environments for microservice development, like a whole Kubernetes stack or Docker Compose stack. Tilt is an awesome, rewarding tool which I use regularly. Part of its offering is monitoring Dockerfiles for changes with automatic rebuilds and displaying this in a web UI.