Reconsider Uffizzi Cloud for per-PR previews?

[JasonWeill]

Problem

Binder's limited capacity makes it impractical for per-pull-request previews of code, especially of code that affects the browser UI.

Proposed Solution

Earlier this year, we had a PR in JupyterLab to add Uffizzi Cloud to every pull request, at no charge to us: jupyterlab/jupyterlab#13699

Uffizzi (the company) makes Uffizzi (the product) free under an open source license, and offered in the above PR to host instances of their product for our open source product at no cost. At the time, we were satisfied with Binder, and we had sufficient concerns (see below), that we declined the request.

Additional context

Advantages of Uffizzi:

• Free, open source software
• Uffizzi Cloud has been made available for free to open source projects like ours
• Self-hosted options available (if we have sufficient capacity and manpower to maintain them)
• Very fast; Uffizzi's integration spins up an instance for every PR, so there is no lengthy startup time per instance, as we've seen with Binder

Disadvantages of Uffizzi:

• Most of us are unfamiliar with the product and with the company
• The per-PR instance is shared publicly; if I make a change to the notebook in the per-PR instance, for example, other developers can see this. This raises a risk that someone could post something offensive or inappropriate in an instance.
• No guarantee that Uffizzi Cloud will remain freely available to us indefinitely