Describe the bug
The default CORS origin is *, which is overridden in the docker-setup template.

To Reproduce
Steps to reproduce the behavior:
Set TEMPORAL_CORS_ORIGINS=* in docker environment variable.

Expected behavior
The application should start.

Additional context
This validation error shows up in the logs.

config file corrupted: yaml: line 24: did not find expected alphabetic or numeric character

I would propose either setting the default to * here or update the validation logic to allow *