fastapi-app is exiting with code 127

[VictorGavo]

I've practically rewritten the .sh files at this point. Gone over the dockerfile. Not sure what to do

[gmos]

This is the shell in the fast_api container not recognizing the first line in the pre-start.sh. There seems to be a \r in behind the bash. Perhaps caused by editing this file in a windows editor.
Or have you perhaps changed the Linux version of the fast_api container.