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What is Docker?

Ever heard a developer say, "But it works on my machine!"? 😫 In this video, we explain What is Docker and how it fixes the problem of broken environments by acting like a "magic lunchbox" for your code. We break down how Docker allows you to package your application with everything it needs (libraries, tools, settings) so it runs exactly the same way everywhere. We also compare Docker Containers to Virtual Machines (VMs)- explaining why VMs are like maintaining a full house (heavy and slow), while Docker containers are like efficient apartments (lightweight and fast),. Topics Covered: • Docker Architecture: Understanding the Client-Server model. • The Workflow: moving from a text-based Dockerfile - to a built Image - to a running Container. • Registry: How Docker Hub allows you to share your images with the world,. • Volumes: How to persist data so you don't lose your database when a container shuts down. • Dockerfile: The "recipe" or instruction manual for your app,. • Images: The read-only "blueprint" or snapshot of your application,. • Containers: The running instance of that image (the actual app in action) Key Commands: • docker build: Create an image from a Dockerfile. • docker run: Create and start a container. • docker ps: List all running containers. #Coding #CloudComputing #DockerTutorial #SysAdmin #Containers