Docker containers are launched using Docker images, which are built from layers of Dockerfiles. A Dockerfile is a text document that contains all the commands or instructions to create, copy, and run an image. Let’s look at what goes into creating a Dockerfile, which could be used to build a runnable Docker image.

Quality is now considered everyone's responsibility, and many developers are acquiring testing skills to validate their code before it gets to dedicated quality engineers. But where should you start? Consider beginning with unit tests that help you write better code, then building to integration tests and E2E testing.

When your application is scheduled to go to production, the development team may be asked what their regression testing strategy is. This is a perfectly reasonable question, but a lot of people have a hard time answering it. Don't overcomplicate it. Analyze your process, look at the other testing, and put it together.