Allow Docker build from git repo
Mention 'make clean' in CONTRIBUTING.adoc
Merge pull request #92 from mfojtik/contributing

Merged by openshift-bot
Add build docs
Merge pull request #93 from pmorie/build-doc

Merged by openshift-bot
Merge pull request #89 from csrwng/docker_build_from_repo

Merged by openshift-bot