What is Docker?

Docker is a set of platform-as-a-service (PaaS) products that use OS-level virtualization to deliver software in packages called containers. Docker containers are isolated from one another and bundle their own software, libraries and configuration files; they can communicate with each other through well-defined channels. All Docker containers are run by a single operating-system kernel and are thus more lightweight (from a system resource perspective) than full virtual machines.

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What is Docker Hub?

Docker Hub is a service provided by Docker for finding and sharing container images with your team and other people. It provides the following features:

• • Repositories: Push and pull container images.

  • Teams & Organizations: Manage private repositories of container images.

  • Official Images: Pull official vendor container images.

  • Builds: Automatically build images from GitHub and Bitbucket and push them to Docker Hub

  • Webhooks: Trigger actions after a successful push to a repository to integrate Docker Hub with other services. 

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More information:

• Docker Hub

• What is Kubernetes?

• What are Containers?