We need a unique container image per plugin/workspace (collection of related packages).

Since we have like 60 plugins in RHDH 1.4, plus more in rhdh-plugins not included in RHDH (like Orchestrator), this means we will need to:

• curate a list of plugins via their plugin name, and add to the app-config.yaml in showcase
• using that list, generate 1 tekton pipeline for each plugin
  • need the source repo + path to the plugin workspace, eg., https://github.com/backstage/community-plugins/tree/main/workspaces/quay (or some tag?)
• generated pipelines should use the custom task from RHIDP-5415 to create a new container image, triggered every time the workspace content changes

Will also need some sort of roundtrip update (circular dependency) to the showcase repo so that the tag/digest listed there matches those of the generated containers. This can then be used to trigger a respin of the showcase image, every time a new plugin container is created.