This is a meta container intended to build other containers in controlled environment. In theory it should be possible to build all components with it, the only thing you need to provide is access to hosts docker socket, see run.sh, and GitHub auth token to have access to private repo's.
In ezuce-ci folder:
./build.sh $TOKEN
./run.sh $TOKEN
docker exec ezuce-ci ./build.sh
or
docker exec ezuce-ci 'cd reach && ./build.sh'