Thank you raulfg3 !
I'm trying swag as a new container with port 180->80 and 1443->443 (my router is configured to forward ports 80/443 toward 192.168.0.10:180/1443) but it won't work. I have this error :
Some challenges have failed.,
I have openmediavault 5.5 installed on my Odroid HC2 with nextcloudpi running through docker plugin. Everything works great on my local network but I cannot access outside of my local network to neither nexcloud nor openmediavault web gui.