Hi Damian,
A1: The address you're trying to access should be health-ui, not healt-ui
A2: You're getting that error because you're trying to open on WinRAR a file that's not a ZIP file. Appeon decided on using the ".zip" filename suffix for Cloud App files, but it's not a ZIP file.(you don't see this .zip suffix because you have your Windows Explorer configured to not show file extensions)
You installed the Cloud App Launcher, which is the tool that will help manage the PS Cloud Applications you install. You haven't installed your application yet.
You run the local application the same way you would run any other PS application you go to the Cloud App Launcher landing page of your client app and install if from there. All you have to do is indicate that the Web APIs reside in the port indicated by the Docker Container.
A3: It's not necessary to host the client in another container for it to work locally, you can choose to host it on IIS as well. If you still want to have it work containerized you should look up how to containerize a static website.
A4: It's recommended to let the Server/Gateway handle HTTPS offloading instead of the container framework. This will of course depend on the network infrastructure provider you choose to use. If you're working locally then you should let IIS do the HTTPS offloading and redirect incoming connections to your containers.
Regards,
Francisco