Any possibility to make containers in different networks within the same host to communicate? Please note that I am not using docker-compose at the moment.<
According to Docker Docs Containers can only communicate within networks but not across networks
You can attach a container to two networks and be able to communicate that way.
edit: Although at that point why have two networks in the first place.
Here's the link:
https://docs.docker.com/engine/userguide/networking/dockernetworks/
-Bruce