To install you'll need docker beta.
To install run
docker build -t jenga-docker .
To start incremental builds with tests run
docker run -ti -v `pwd`:/home/opam/jengaroot/project_root jenga-docker sudo '/home/opam/.opam/4.02.3/bin/jenga' -progress -P ./project_root/.runtest
You can modify any file and jenga will pick up the changes.
To clear all incremental build artifacts (stored in the local DB, not the build atifacts files) run
docker run -ti -v `pwd`:/home/opam/jengaroot/project_root/ jenga-docker hg st -ni0 | xargs -0 rm -v