Docker Networking

Libraries: If you want this lab, consider one of these libraries.
Cloud

Docker Networking

You are developing a new containerized application for a client. The application will consists of two containers: one for the frontend application, and one for the database. Your client has security concerns about the database, and they want it to run on a private network that is not publicly accessible. You will need to create two networks. One will house the frontend application that is publicly accessible, and the other network, which is flagged as internal, is where the database will reside. Create a MySQL container connected to the private network and a Nginx container that is connect to both networks.

Get started Contact sales

Lab Info

Level

Beginner

Last updated

Sep 24, 2025

Duration

1h 0m

Challenge

Create the frontend network
Use the docker network to create the frontend network:
```
docker network create frontend
```
Challenge

Create the localhost network
User the docker network command to create the localhost network:
```
docker network create localhost --internal
```

Challenge

Create a MySQL container

Create a MySQL container that is attached to the localhost network:

docker container run -d --name database --network localhost -e MYSQL_ROOT_PASSWORD=P4ssW0rd0! mysql:5.7

Challenge

Create an Nginx container
Create an Nginx container that is attached to the localhost network:
```
docker container run -d --name frontend-app --network frontend nginx:latest
```
Challenge

Connect frontend-app to the internal network
Connect frontend-app to the localhost network:
```
docker network connect localhost frontend-app
```

About the author

Pluralsight Skills

Pluralsight Skills gives leaders confidence they have the skills needed to execute technology strategy. Technology teams can benchmark expertise across roles, speed up release cycles and build reliable, secure products. By leveraging our expert content, skill assessments and one-of-a-kind analytics, keep up with the pace of change, put the right people on the right projects and boost productivity. It's the most effective path to developing tech skills at scale.

Real skill practice before real-world application

Hands-on Labs are real environments created by industry experts to help you learn. These environments help you gain knowledge and experience, practice without compromising your system, test without risk, destroy without fear, and let you learn from your mistakes. Hands-on Labs: practice your skills before delivering in the real world.

Learn by doing

Engage hands-on with the tools and technologies you’re learning. You pick the skill, we provide the credentials and environment.

Follow your guide

All labs have detailed instructions and objectives, guiding you through the learning process and ensuring you understand every step.

Turn time into mastery

On average, you retain 75% more of your learning if you take time to practice. Hands-on labs set you up for success to make those skills stick.