Thank you for the improvements. May I recommend a section in the new documentation for installation? I don't see one.
I found the old documentation for installation to be somewhat fragmented. Some parts are in the FAQ which I find odd and the quickstart guides are no longer there. Also, I believe there is a typo (at least from my limited experience) in the FAQ installation:
sudo nvidia-docker run -it harvardnlp/opennmt:8.0 .
I was advised to remove the "." at the end, which solved my problem.
I can assist with the installation documentation, if that would be helpful. It would definitely improve my competency with this tool and others might benefit.