Hi 
@eager-beach-78267, you probably noticed that 
env variables can be used when starting the services?
I am not aware of such a tool that you mentioned in Ory CLI. However, I created some 
scripts that might get you started to substitute template variables. I used a similar approach offered by Auth0 CLI, which uses the following notation:
⢠
##your_string_variable_to_replace##
⢠
@@you_array_variable_to_replace@@
You can find an example file 
here.