You usually run one main process in one Docker container. In order to follow this article you need to understand the following 2 basic concepts of Docker:ĭocker containers: containers are runtime environments. The main advantage is to avoid the situations when we say “it worked on my machine”, because Docker containers will give us the same environment on all machines. :)ĭocker’s main purpose is to give us run-time environments that we can re-create/reproduce on any machine (that runs Docker). It got 1,500 likes on Youtube from 120,000 views, so it’s not only me who says you’ll get this, so don’t worry. If you are absolutely new to docker, please start with the Getting started with Docker - step by step tutorial - article on the blog. Let me repeat a few basic concepts to better explain. Since this tutorial is for beginners let’s go slow and go deeper into the above definition. You’ll use a Dockerfile to create your own custom Docker image, in other words to define your custom environment to be used in a Docker container. What is a Dockerfile and why you’d want to use one?Ī Dockerfile is a text file that defines a Docker image. Please be patient, every part of it contains practical information, I hope you’ll find it useful. This is a pretty lengthy article (over 5500 words), you can think of it as a chapter of a Docker book. You’ll find the videos included in this article as you read and progress through the content. This article is the writeup of 2 Dockerfile video tutorials on my Youtube channel, meaning I created the videos first and I’m adding the details in written form now. We’ll go through a few examples of my workflow for creating my Dockerfiles and I’ll share my experience and best practices regarding working with Dockerfiles. Moreover I’ll explain why and in which situations you’ll want to use a Dockerfile in the first place. This article will help you understand the concept behind creating a Dockerfile.
What is a Dockerfile and why you’d want to use one?.
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