I am totally new to open edx, I have installed open edx on ubuntu server 16.04 using the following guide: https://github.com/regisb/openedx-docker
The lms works fine at: localhost
but the cms does not work at all, I can not reach it by any way, even from the lms when I clicked view course in studio; it says the site unreachable.
Note: the UFW is disabled because the cms is bind to port 80.
what could be the problem?