changes for docker deployment
changes for docker deployment

* docker deploy mode and comments added
 * runtime path changed to application root directory
 * docker_host_app_root variable added

CSC-IT-Center-for-Science/pouta-blueprints,CSC-IT-Center-for-Science/pouta-blueprints,CSC-IT-Center-for-Science/pouta-blueprints,CSC-IT-Center-for-Science/pouta-blueprints