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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.

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Path Info

Level
Clock icon Beginner
Duration
Clock icon 1h 0m
Last updated
Clock icon Sep 02, 2025

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Table of Contents

  1. Challenge

    Create the frontend network

    Use the docker network to create the frontend network:

    docker network create frontend

  2. Challenge

    Create the localhost network

    User the docker network command to create the localhost network:

    docker network create localhost --internal

  3. 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

  4. 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

  5. Challenge

    Connect frontend-app to the internal network

    Connect frontend-app to the localhost network:

    docker network connect localhost frontend-app
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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.

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