Allow login to local Nextcloud instance running in a Docker container

[Pietromobil]

Describe the bug
Cannot login to my Nextcloud running in a Docker container on my Raspberry Pi4

To Reproduce
Steps to reproduce the behavior:

1. Go to 'login page'
2. Enter 'https://raspi1:8082'
3. Click on 'Anmelden'
4. Get error 'Invalid Protokol: URL muss mit https:// beginnen'
   Another try:
5. Go to 'login page'
6. Enter 'https://192.168.172.88:8082'
7. Click on 'Anmelden'
8. Get error: 'Fehlerhaftes JSON Format'

Expected behavior
Login should work with both addresses

Screenshots
n/a

Environment:

• Device: Pixel 6a
• OS: Android 16
• App version: 0.26.0
• Cookbook version: 0.11.5
• Nextcloud version: 32.0.5

Thanks for looking into this!

[Pietromobil]

Please note: the no longer maintained App found here:
https://play.google.com/store/apps/details?id=com.nextcloud_cookbook_flutter
does support the login using the above address. So basically this should also work here.
Thanks!

[lneugebauer]

I assume this is connected to #63.

It should already be possible to connect to local docker instances so I'd need some way to reproduce the server setup as well.