I'm trying to set up a generic steam cache container. For it to cache Origin it needs the SNI Proxy container running on the same IP so traffic is forwarded correctly. This uses port 443 so I cant run it on the host IP as unRAID uses port 443 and I don't want to disable this. So is there a way I can get 2 containers running on the same IP that is different to the host IP?

Did you ever find a way of doing this, I'm having the exact same issue =\

Would it work to assign both containers to the same docker network and specify the IP of the SNI Proxy container in a config file or environment variable (ie https://sniproxy)? Otherwise, if you really need the same IP, you would need to make a new Dockerfile to combine the two containers into one