Not sure if I understand your advice. I custom the port to fit my arrangement, certainly not 8080 but something else however it still point to port 80 and 443 of the server. I did search on this forum but return none result so far.
I doubt that it has something to do with the updates from Ubuntu itself lately (in a month or so), or the docker, or even the rancher… As I said, a month ago, I was able to get everything works in one go… not this time.
I will try the roll-back the Ubuntu updates per TiTidom’s post, and would let you know