Reacted with to macom’s post in the thread 3rd-party [How-To] Nextcloud with Letsencrypt using OMV and docker-compose.Reaction (Post)Docker Container set up by this method can be managed by openmediavault-docker-gui, portainer or from CLI.
In order to be able to reach nextcloud from the internet you need an external IPv4 address and a hostname.
Regarding external IPv4…
Portainer 2.0 (CE) is now out - released in the last 48 hours.
Upgrade is easy enough, but it has to be installed manually as OMVExtras currently points to Portainer V1 (and they've changed tags to…