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Registries: where images live

Containers, images and the cloud

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A registry is a store for images

Once built, an image is pushed to a registry so other machines can pull it. Docker Hub is the public one. Every cloud provider runs their own, and companies host private registries.

Deployment is usually just: the server pulls an image from a registry and runs it.

  1. Docker

    builds the image

  2. Registry

    stores it

  3. Kubernetes

    pulls and runs it

Three different tools, three separate security surfaces.