Wrap up

Highlights

What you’ve learned in this course:

• How Docker revolutionizes your development.
• The architecture of Docker.
• The basics of Docker.
• Creating a Dockerfile.
• Creating a Compose file for multiple services.
• Related Docker Commands.
• Running databases like MySQL, MongoDB, Postgres.
• Running apps like WordPress, Drupal, PrestaShop.
• Making and running your Node.js app.
• Debugging the Node.js app.
• Pushing the Docker images to a repository.

What more can you do?

If you want to practice more by building multi-container applications, consider creating an application using your favorite language, database, and associated dependencies. For example:

1. The obligatory to-do app
2. A web-based notes system (bonus points for markdown support)
3. A recipe database containing ingredients, steps, and search.
4. An online poll system to create and host simple surveys
5. A real-time chat app.

Consider how multiple Docker containers would permit horizontal scaling. People chatting in the same room could be connected to different containerized applications running on different servers. A backend redis, database, or queue system could broadcast messages to other containers.

This way you will learn more about the power of Docker.