The idea of implementation is very similar to what is showing in the image above. Each app will run as a container. Each container will expose their own port/ports as can be seen as `exposed port` in attached to the diagram apps above. We can map a host system port (`mapped port` in the diagram) to the `exposed port` in the container. And then using reverse proxy we can connect different subdomains to different container apps. For example in the diagram above, ports 35001 to 35008 are ports on the host machine inside which containers (App1 to App4) run. Each app runs different services on different ports. For the apps to be accessible from systems outside the host we have to map the ports on the container with those on the host.