I've installed OpenProject via the Docker installation guide on the official website.

The website is running, I can access the homepage and most of the other features aswell.

There is one problem though, some hyperlinks want to link me to "localhost:3000/" but all of those connections fail. In the official installation guide we linked port 80 of the container with port 8080 of the debian image, and I have found nothing about port 3000 in the installation guide.

In short: all of the "localhost:8080/..." work, but all of the "localhost:3000/..." connections fail, how do I fix this?

UPDATE:

I linked the port 3000 of my Debian VM to the container port 80. If I now access OpenProject via localhost:3000 from inside the Debian-VM everything works fine.

But if I try to access OpenProject via the IP of the VM from a different PC in the network, every hyperlink I click links me to a "localhost:3000" url, and obviously I wont get any response from the servers since there is nothing running on the localhost of the PC in the network.

How do I manage to get OpenProject to work properly from outside the VM?