As user I want to list all images to know which images I can clone

[whymatter]

Purpose

A user want to see a list of all images of a certain repository so he knows which images are available and how he can pull these images. We do not make the get and display of repositories a single story since for me this is not covered with business value.

Subtasks

• [x] Establish authentication between registry and gateway
• [x] GraphQL endpoint to list all repositories (required to enable navigation to images)
• [x] GraphQL endpoint to list all images of a certain repository
• [x] Adapt frontend to load (and display) repositories from server
• [x] Adapt frontend to load (and display) images from the server (per repository)

Some Links

• https://hub.docker.com/_/registry
• https://docs.docker.com/registry/