[FEAT] - Greenhouse UI container

[uwe-mayer]

Priority

(Medium) I'm annoyed but I'll live

Description

Currently the ui container provided for greenhouse deployed with the helm charts serves an index.html file with a script tag importing the core greenhouse-ui javascript bundle from an external source. We aim to provide a container that serves all bundles for the microfrontends the greenhouse core ui consists of from localhost and therefore has no external dependencies.

Necessary steps:

• [ ] Move the greenhouse and the greenhouse-management app from https://github.com/sapcc/juno/tree/main to this repo
• [ ] Introduce gh-actions to build the packages and ship them to the repository's package registry. The goal is to reuse a custom gh-action is to be published and maintained by the juno team for uniformity.
• [ ] Provide a container image hosting the apps locally
• [ ] Introduce a gh-action to build the UI container and ship it to the repository's container registry

Reference Issues

No response

[uwe-mayer]

Coordination of repository moving here: https://github.com/sapcc/juno/issues/592