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Compose V2 has replaced it and is now integrated into all current Docker Desktop versions. For more information, see Migrate to Compose V2. By default Compose sets up a single network for your app.
In Docker Compose, a network refers to a layer allowing the containers of the services defined in the compose.yaml file to communicate with each other. To create a network, you can set the networks attribute and assign it to multiple services in the Compose file as follows:
Networks let services communicate with each other. By default Compose sets up a single network for your app. Each container for a service joins the default network and is both reachable by other containers on that network, and discoverable by the service's name.
Learn how to set up Docker Compose networks and the best practices for building robust, scalable Docker Compose applications.
Compose simplifies the control of your entire application stack, making it easy to manage services, networks, and volumes in a single, comprehensible YAML configuration file. Then, with a single command, you create and start all the services from your configuration file.
Gain an understanding of Docker networking fundamentals, specifically with respect to Docker Compose, for the purpose of isolation or facilitating network communication between containers and the Docker host
This guide will walk you through connecting a Docker container to multiple networks, including external ones, using Docker Compose, and will explore the different network types available in Docker. Multiple Networks: Connecting a container to more than one network can drastically improve your application architecture.
Networks and Volumes are now first class citizens of Docker Compose. That gives you a lot of control, allowing you to for instance put individual services on more than one network, and easily share volumes. I wanted to share with you how you can also use this functionality, so naturally, I turned it into a video.
In this short tutorial, we’ll see how to use a network to connect multiple Docker Compose projects with some docker-compose.yml examples. 2. Using a Network for Multiple Docker Compose Projects. Since Docker Compose introduces networking, we can make our containers aware of an existing network and let them join it.
Let‘s walk through configuring a simple Docker Compose stack to use host networking: 1. Define services in docker-compose.yml. First, define the services in the standard docker-compose.yml format. Here we have a web service and database service: web: