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What is Docker Hub?

DockerJunior~1 min read
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Docker Hub is the public Docker Registry, the most popular and official one. It is used for storing, distributing, and downloading Docker images.

What Docker Hub allows

  • storing your own images (public or private);
  • downloading other people's ready-made images (for example, nginx, postgres, node);
  • versioning images with tags (:latest, :1.2.0);
  • connecting CI/CD for automatic image push.

A typical workflow

bash
docker pull nginx # download an image docker login # log in docker push myrepo/app # push your image

Why it is useful

  • most projects pull their base images from there;
  • it cuts down development time - no need to build everything from scratch;
  • it makes it easy to deliver images to servers and to the cloud.

Summary: Docker Hub is the main public repository of Docker images, which stores both official images and community images, and which is used by default by the docker pull client.

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