In this chapter, we took a huge step toward the vision of deploying Notes on a cloud-hosting platform. Docker containers are widely used on cloud-hosting systems for application deployment. Even if we don't end up using the Docker Compose file once, we can still carry out the deployment and we have worked out how to Dockerize every aspect of the Notes stack.
In this chapter, we learned not only about creating Docker images for Node.js applications, but also about launching a whole system of services comprising a web application. We have learned that a web application is not just about the application code but also the databases, the frameworks we use, and even other services, such as Redis.
For that purpose, we learned both how to create our own Docker containers as well as how to use third-party containers. We learned how to launch containers using docker run and Docker Compose. We learned how to build custom Docker containers using a Dockerfile, and how to customize third...
