Docker network without Docker

Ever forgotten to add a port forwarding rule in Docker? Annoying to restart the container, right? But how does port forwarding between a container and a host even work? What about container-to-container communication, and what exactly are virtual Ethernet bridges? Wait, how do cgroups and namespaces relate to all this?

Let’s continue my “Docker * without Docker” series and dive into the depths of Docker networking - without worrying too much about Docker itself. What does Linux offer? How can we build something like this from scratch? Maybe even directly in the terminal?

Join me for a hands-on exploration of the fundamentals and exciting details behind container networking!