Ghost Environment Variable not set correct

### Which component(s) is affected? Kubero UI ### Describe the bug Hi Kubero Team, by default the Ghost Template sets "database__connection__host". After changing this to "GHOST_DATABASE_HOST" the deployment spins up. Cheers AA ### Steps to reproduce _No response_ ### Expected behavior Connection to MariaDB will be established. ### Screenshots <img width="945" height="354" alt="Image" src="https://github.com/user-attachments/assets/f4f89352-71ef-4c7e-8a72-e161799b1a10" /> ### Additional information _No response_ ### Debug information _No response_