Docker is an open source containerization platform. Developers can package applications in containers, components combining application source code with the operating system (OS) libraries and dependencies required to run that code in any environment.
Docker Hub is the world's largest public registry for hosting Docker images. It is the default download source when you are working with Docker.
A Docker image is a file with a set of instructions for building a Docker container. It is like a snapshot in virtual machine (VM) environments. When a user runs an image, it can become one or many instances of a container.
PMCs can host product releases on Docker Hub for users to download, build, and deploy. The ASF has a limited number of Docker Hub seats, so there is a limit of two seats per PMC. Request a seat or seats for your PMC in a Jira ticket for Infra, with a link to the PMC email conversation that justifies the request. If you feel your PMC needs additional seats, explain the special circumstances in the ticket.