How to run a command when launching WSL Ubuntu

I can open ubuntu.exe using a .bat file by:

start ubuntu.exe

But I want to pass the parameter "./mnt/c/xxx.sh" to ubuntu.exe.

I.E. I want ubuntu.exe to launch a specific shell by using a .bat file, to ensure I don't have to open that particular shell every single time I open ubuntu.exe.

Can anyone give me some suggestions?