Thx @Mike
the issues had been related to the ofn setup and not necessarily to docker. I tried running (all) the ansible scripts inside a (single) ubuntu docker container.
Docker is not intended to be used as virtual machine / compatibility layer but as small lightweight cointainers (with only one linux process) that can flexibly be composed together… OFN deployment would be comprised of many containers. The benefit would be flexibility, e.g. trying a different reverse (caching) proxy or sharing the (heavy weight) postgres database between instances, etc… @almereyda once did a promising docker deploy Early draft of a docker compose deployment but I could only get it running 95%