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Docker Resources, Tutorials and Guides
Docker made containers mainstream, solving the classic 'works on my machine' problem. This hub collects Docker tutorials and guides on images, containers, Compose, and packaging applications so they run the same everywhere.
2 articles · Updated July 1, 2024
Small images and a good .dockerignore file will save you more time and money than almost any other optimization.
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What is the difference between an image and a container?▾
An image is a read-only template that defines what's inside — the OS layers, dependencies, and your app. A container is a running instance of an image. You can start many containers from the same image.
What is Docker Compose used for?▾
Docker Compose lets you define and run multi-container applications with a single YAML file. It's ideal for local development where your app needs a database, cache, and other services running together.