Network Commands

Multi-container communication relies on networks. Docker offers several drivers: bridge (default), host, none, and a custom bridge scoped per project.

List and create

Linux

docker network ls
docker network create ros-net

Attach containers to a network

Connect a container to a custom network so it can reach others by container name (automatic DNS resolution):

Linux

docker run -d --name ros-node --network ros-net ros:humble

tip

Compose networks automatically

With docker compose, Compose creates a bridge network per project, and services talk to each other by their services name — no manual docker network create needed. See Compose Commands.

Inspect network details

Linux

docker network inspect ros-net