Creating custom bridge networks in Docker - Try It Yourself

Creating custom bridge networks

📖 Scenario: You are setting up Docker containers for a small app. To keep the containers organized and isolated, you want to create a custom bridge network. This helps containers communicate easily and keeps them separate from other Docker networks.

🎯 Goal: Create a custom Docker bridge network named my_custom_network. Then, run a container attached to this network and finally list all Docker networks to confirm your custom network is created.

📋 What You'll Learn

Create a Docker bridge network named my_custom_network

Run a Docker container named my_nginx using the nginx image attached to my_custom_network

List all Docker networks to verify my_custom_network exists

💡 Why This Matters

🌍 Real World

Custom Docker networks help isolate and organize containers in real projects, improving security and communication.

💼 Career

Understanding Docker networking is essential for DevOps roles managing containerized applications and infrastructure.

1

Create a custom Docker bridge network

Use the docker network create command to create a bridge network named my_custom_network.

Docker

# Create a Docker bridge network named my_custom_network
# Your code here

Need a hint?

Use docker network create --driver bridge my_custom_network to create the network.

2

Run a container attached to the custom network

Run a Docker container named my_nginx using the nginx image. Attach it to the my_custom_network network using the --network option.

Docker

docker network create --driver bridge my_custom_network
# Run a container named my_nginx attached to my_custom_network
# Your code here

Need a hint?

Use docker run -d --name my_nginx --network my_custom_network nginx to start the container.

3

List all Docker networks

Use the docker network ls command to list all Docker networks and confirm that my_custom_network is listed.

Docker

docker network create --driver bridge my_custom_network
docker run -d --name my_nginx --network my_custom_network nginx
# List all Docker networks
# Your code here

Need a hint?

Simply run docker network ls to see all networks.

4

Display the custom network details

Use the docker network inspect command with my_custom_network to display detailed information about your custom network.

Docker

docker network create --driver bridge my_custom_network
docker run -d --name my_nginx --network my_custom_network nginx
docker network ls
# Inspect the my_custom_network details
# Your code here

Need a hint?

Run docker network inspect my_custom_network to see the network details including connected containers.