Sounds like the connection to the database doesn't work.
If you click on the Icon on Unraid Docker Page you get menu where you can access the Logs. Alternatively you can find the docker logs using Unraid Terminal and navigate to folder "/var/lib/docker/containers/<Your Container Id>/<Your Container Id>-json.log". Container Id will be shown in Advanced View on Unraid Docker Page.
Feel free to share the log and/or your config in case you still can't resolve it.
I have updated the template, so it should work now. If I remember correctly it takes some time that it's synchronized to Community Applications. Alternatively you can update the XML manually:
https://raw.githubusercontent.com/TheAxelander/unraid_ca/master/OpenBudgeteer.xml
Thanks a lot for the feedback. With the latest update there is a breaking change in the Docker Config. The updated config details can be found in the README.
When I read your post I immediately noticed that I totally forgot to update the Unraid template. I will do this right now.
Hi, just to be sure, the DB User and the DB itself are availabe on the MySql Sever with the IP 192.168.178.100 ? Because I can't see a running MySql Server in your screenshot of running Docker Container
You also need to map the Sqlite Path to some folder as you would lose all you data after every container restart. Once this path is mapped it should work normally.
Unfortunately I have no Unraid system any longer to test this. What you could do is to send me the docker run command so I can reproduce it in my environment.