Foundational components used to build application containers without privileges.
CBE is similar to tools like Jib and Ko in that it builds a virtual file system (which may include an application, or applications) and then appends that to a "base" container image.
CBE uses the concept of a pipeline. A pipeline contains a set of statements which execute a piece of logic.
An example of a statement includes:
- Setting an environment variable
- Downloading a file
- Creating a symbolic link
Custom statements can be included to add custom functionality (e.g. installing packages, building an executable application).
Usage documentation can be found in the docs directory.
CBE includes a reference implementation that builds a container from a YAML configuration file. While it's not exactly production-ready, there's nothing stopping you from using it.
The bulk of it can be found in the cmd/build.go file.
Example configuration files can be found in the fixtures/v1 directory.