Toast

Toast is a tool for doing work in containers. You define tasks in a YAML file called a toastfile, and Toast runs them in a containerized environment based on a Docker image of your choosing. What constitutes a "task" is up to you, tasks can install system packages, build an application, run a test suite, or even serve web pages. Tasks can depend on other tasks, so Toast can be understood as a high-level containerized build system. Toast caches each task by committing the container to an image. The image is tagged with a cryptographic hash of the shell command for the task, the contents of the files copied into the container, and all the other task inputs. This hash allows Toast to skip tasks that haven't changed since the last run. In addition to local caching, Toast can use a Docker registry as a remote cache. You, your teammates, and your continuous integration (CI) system can all share the same remote cache.