Docker image that is used to run SonarQube in an environment where running a Docker image as root is prohibited (like OpenShift v3). The default SonarQube Docker image needs to run as root, so a layer is required on top to prevent this.
The repository also contains a OpenShift v3 template that can be used to setup an environment with persistent PostgreSQL support.
Docker image can also be found in the Docker registry willemvd/sonarqube-unprivileged