• Coding
• Tutorials
• AUTHOR: codevision AI engine
• DZone IoT

This article explains how to effectively manage Docker networking for multi-container applications. It highlights the limitations of the default bridge network and introduces user-defined bridge networks for better service discovery. The tutorial is authored by Akaash Vishal Hazarika, who provides practical CLI examples and demonstrates how Docker Compose simplifies network configuration. It is worth reading because it offers a clear, step-by-step guide to overcoming common Docker networking challenges. Readers will learn how to create custom networks, connect containers, and use Docker Compose for efficient local development.

Key facts

• The default Docker bridge network is unsuitable for multi-container applications due to unreliable IP addresses and lack of service discovery.
• User-defined bridge networks provide automatic DNS-based service discovery, allowing containers to communicate using service names instead of IP addresses.
• Docker Compose automates network creation and service discovery, making it easier to manage multi-container setups during local development.
• Containers connected to the same custom network can communicate using their service names, such as ‘my-database’, without needing to know their IP addresses.
• The article provides practical CLI examples and a docker-compose.yml file to demonstrate how to set up and manage Docker networks effectively.