There will not be any updates required for the ITFlow docker container.
Luckily the built-in updater that Johnny and team have built works great. I designed the docker image to work amongst users forked repositories. Simply sync your git repo for your personal itflow instance - and set the docker environment variables:
`ENV ITFLOW_REPO github.com/itflow-org/itflow
ENV ITFLOW_REPO_BRANCH master`
Let me know if you have any additional questions!