Construct docker images with BuildStream
Currently this repository uses Dockerfiles
in order to construct BuildStream docker images. In contrast, https://gitlab.com/freedesktop-sdk/infrastructure/freedesktop-sdk-docker-images/-/tree/master uses BuildStream itself for constructing the images that are then used for CI.
Perhaps we could consider converting this project into a BuildStream project. By doing so, we then provide an opportunity for standardising the methods for constructing (and packaging) BuildStream, and this could then be uniformly adopted across projects.