Writing parametrized Dockerfiles relies too often on using --build-arg and then embedding scripts inside the container. Sail aims to provide a mode concise and elegant way to solve this issue, alongside allowing to mutialize best practice cross dockerfiles.
Sail is spacialized programing language targeting Dockerfiles as a target. It provides :
- Container builds as a first class citizen
- An algebra to manipulate build instructions
- Templates as first class citizen
- Functions and variables
- Module imports
- Sensible scoping rules (hello bash)