Hi Dan,
There are not 2 certificates but 2 Nginx - one running inside the Discourse container and one running outside.
A reboot of NethServer will fix the certificate for the Nginx running inside the container and make it to use the same certificate as the one used by the Nginx running outside the container.
Now I am trying to find a way to fix the certificate difference but without a reboot… I tried restarting the Nginx running inside the container, restart the container, and restart docker; still not fix.
Any suggestion appreciated,
Michel-André