Setting Up a Docker Network and Linking a Container to It

In this article, we'll guide you through the process of creating a network and connecting a Docker container to it on a Linux-Unix system.

First, let's clarify that we'll be using a Docker Container for this process. Docker allows the creation of networks and the connection of containers to those networks, making it possible for containers connected to the same network to communicate with each other.

When creating a network in Docker, it's crucial to give it a name, referred to as . In our example, we'll name our network MyNATnetwork. The bridge network is the default network in Docker, but you can also create custom networks as needed.

To see the list of networks in a Docker host, simply run the command. This will display the default bridge network, as well as any custom networks you may have created.

To create a network, you can use the following command:

After creating the network, you can connect a container to it using the command. For example:

Replace with the name of the network you created, and with the name of the container you want to connect.

Once a container is connected to a network, you can inspect it to verify the connection. To do this, use the command on the network. The container attached to the network will be mentioned in the network's information.

Communication between containers in Docker takes place using IP addresses. The bridge network provides a default DNS service to containers attached to it, making it easier to access other containers by their hostnames.

It's worth noting that a container can connect to one or more networks in a Docker host. Exiting from a container in Docker can be done using Ctrl + p then Ctrl + q.

By creating a network in Docker, you enable devices inside the network to connect and transfer files. This can be incredibly useful for setting up complex applications or for developing and testing multi-container applications.

We hope this guide helps you in creating and connecting networks and containers in Docker on a Linux-Unix system. Happy containerising!