Related

Connect Container to Network

docker

Connect an existing container to a network.

Disconnect Container from Network

docker

Disconnect a container from a network.

Inspect Network

docker

Display detailed information about one or more networks.

docker/network-create

Create Network

Create a new user-defined network.

network
create
bridge

Command

docker network create

Explanation

docker network create allows isolation and control over container communication. The -d flag specifies the driver type (bridge, overlay, macvlan, etc.). Custom networks simplify DNS-based service discovery and container grouping.

Common Use Cases

  • •Isolate services within specific network boundaries
  • •Enable secure communication between multi-container apps
  • •Set up overlay networks for distributed services

Best Practices

  • ✓Name networks meaningfully to represent environment or project
  • ✓Use user-defined bridge networks for improved DNS resolution

Common Mistakes to Avoid

  • ⚠Using bridge driver for multi-host networking (requires overlay instead)

Troubleshooting

Problem: Network creation fails

Solution: Ensure Docker daemon is running in Swarm mode for overlay networks.

Examples

Create network with default bridge driver

docker network create mynet

Create overlay network for Swarm mode

docker network create -d overlay swarmnet

More

Remove Network

docker

Remove one or more networks.

Run Container

docker

Create and start a new Docker container from an image, with options for interactive mode, port mapping, volume mounting, and environment configuration.

Tag Image

docker

Create a new tag for an existing image.