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#containers

Articles tagged with #containers

  1. From Monolith to Microservices: Building Multi-Container Apps with Docker

    Before we get into Docker Compose, we need to set the stage with a real-world problem. Because Docker Compose does not make sense in isolation. It makes sense once you have felt the pain of managing multiple containers by hand. So let us start with an example that most of us interact with every day. A bank. Specifically, we are going to use Bank as our reference architecture for this entire session, and honestly, for the rest of this series all the way through Kubernetes. Pay attention to this example because it is not just a throwaway analogy. We are going to build on it, extend it, and carry it forward. Every concept we introduce from here will connect back to it.

    Jun 15, 202610 min read1
    From Monolith to Microservices: Building Multi-Container Apps with Docker

  2. Understanding Dockerfiles: From Basics to Real-World Deployment

    If you have been working with Docker for even a short time, you have probably heard this phrase thrown around: "just write a Dockerfile." But what does that actually mean, and how does it work under the hood? In this article, we are going to walk through Dockerfiles the same way a classroom session would. We will start from the very basics, build up through each component one at a time, and finish with a real-world deployment where you host an actual web application and a Tomcat server running Jenkins inside Docker containers. Before this, you may have created Docker images by spinning up a container, manually installing things inside it, and then running docker commit to snapshot that container into an image. That works, but it is not the right approach in practice. It is manual, error-prone, and not repeatable. The correct and professional way to create images is through a Dockerfile.

    Jun 14, 202618 min read9
    Understanding Dockerfiles: From Basics to Real-World Deployment

  3. Docker Container Lifecycle: Every Command You Need to Know

    If you are learning Docker seriously, there is one thing you need to accept early. Knowing what a container is means very little if you do not know how to manage one. Starting, stopping, pausing, logging in, copying files, checking memory usage, saving images, and cleaning up - all of this is what makes the difference between someone who has heard of Docker and someone who can actually work with it. This article walks through everything a working Docker environment demands. We are going through the full container lifecycle with real commands, real explanations, and the kind of detail that actually stays with you. By the end, you will have a solid reference for your daily work and your interviews.

    Jun 14, 202615 min read3
    Docker Container Lifecycle: Every Command You Need to Know