Bash scripts can be run as Windows services using SvcBatch.
Inside the bash directory you can find
a basic example that runs .sh script as services.
Put svcbatch.exe into that directory and create
the service by typing
> svcbatch create adummybash --set SendBreakOnStop Yes --set Command [ bash.exe --norc --noprofile ] --set Stop $0 --set Environment PATH=$SystemDrive\msys64\usr\bin;$PATH dummyloop.sh
After that, start the service by typing
> svcbatch start adummybash
To stop the service type
> svcbatch stop adummybash