Using a Docker Bridge Network

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Using a Docker Bridge Network

By default, all containers on a host can communicate with one another over a default bridge network. However, in some cases, you may want to isolate groups of containers by allowing them to communicate over their own isolated network. In this lab, you will have the opportunity to create a custom bridge network designed to facilitate communication between containers on a Docker host.

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Lab Info

Level

Intermediate

Last updated

Jul 18, 2025

Duration

30m

Challenge

Create the bridge network.
1. Create a bridge network called prices-net.
```
docker network create --driver bridge prices-net
```
Challenge

Create the base-price container.
1. Create a container for the component that serves base prices.
```
docker run --name base-price -d --network prices-net linuxacademycontent/prices-base-price:1
```
Challenge

Create the sales container.
1. Create a container for the component that serves products on sale.
```
docker run --name sales -d --network prices-net linuxacademycontent/prices-sales:1
```
Challenge

Create the total-price container.
1. Create a container for the component that serves the total prices of products.
```
docker run --name total-price -d --network prices-net -p 8080:80 linuxacademycontent/prices-total-price:1
```
1. Verify that everything is set up correctly.
```
curl localhost:8080
```
You should get a list of products and their final prices. The total-prices container calculates these prices by first querying the other two containers. This communication takes place over the prices-net bridge network.

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