How to Create Docker Bridge
Docker is a powerful tool for containerization, allowing you to run isolated applications in a lightweight environment. One of the key features of Docker is networking, which allows containers to communicate with each other and with the outside world. In this article, we will discuss how to create a Docker bridge network to connect containers.
What is a Docker Bridge?
In Docker, a bridge is a virtual network that allows containers to communicate with each other and with the outside world. By default, Docker creates a bridge network called docker0 when you install the Docker engine. However, you can also create custom bridge networks to organize and isolate your containers.
Creating a Docker Bridge Network
To create a custom bridge network in Docker, you can use the following command:
docker network create my-bridge-network
This command will create a new bridge network called my-bridge-network. You can specify any name for your custom bridge network.
Connecting Containers to a Docker Bridge
Once you have created a custom bridge network, you can connect containers to the network using the –network flag when you run the container. For example, to connect a container to the my-bridge-network, you can run the following command:
docker run -d --name my-container --network my-bridge-network my-image
This command will run a new container named my-container using the my-image image and connect it to the my-bridge-network. The container will be able to communicate with other containers on the same bridge network.
Viewing Docker Bridge Networks
To view the list of Docker bridge networks on your system, you can use the following command:
docker network ls
This command will list all the bridge networks created on your Docker host, including the default docker0 bridge network.
Conclusion
In conclusion, creating a custom bridge network in Docker is a useful way to organize your containers and control their networking. By following the steps outlined in this article, you can easily create and connect containers to a bridge network in Docker.