What Are Docker Tags and Why Are They Important?
·3 mins
A tag is a mutable pointer to an image digest. Understanding that one fact explains most tagging mistakes.
Docker Tutorials
Docker containerizes applications so they run the same way on your laptop, in CI, and in production. This series covers the concepts and the commands: building images, managing volumes and networks, wiring up Compose, fixing the permission errors everyone hits eventually, and working with registries day to day.
Start with What Is Docker and Why Should You Use It? if you’re new, or jump straight to the topic you’re stuck on below.
What Are Docker Repositories and How Do They Work?
·3 mins
A repository is a named bucket of related image versions. Here’s how naming, namespaces and visibility actually work.
What Are Docker Image Registries and How Do They Work?
·5 mins
A registry is just a content-addressed blob store with an HTTP API in front of it. Here’s how the pieces fit together.