Implementing Modern DevOps

Dockerfile reference

As you can see in the previous section, Dockerfiles are very simple, and if you have any queries, the official documentation for the Dockerfile language is very comprehensive.

In general, the language used for creating Dockerfiles is very similar to the batch processing language of windows (.bat files) from a few years ago.

Let's look at the most used commands:

FROM	This instruction is used to specify the base image. Every single Docker image is created starting from a base image (you can create base images from a running Linux distribution).
COPY	As you can guess, COPY allows you to copy files and folders inside the image. For example, we could copy our application, a war file, or any other artifact that will ...