Make IP network address dynamic
See https://forum.cloudron.io/topic/1410/multiple-vpns-use-the-same-ip-network for the use case.
I think all that is needed is to make the 10.8.0.0 address dynamic. We can make the "8" more dynamic by generating it instead from the container's IP address. For example, replace the "8" with
hostname -I | cut -d '.' -f4