Tomcat 8.5 how to assign different values ​​to the same environment variables for the same project?

Question

tomcat

Hello
, I have a file on my tomket bin/setenv.shand there I wrote down the variables for entering the database. Looks like this:

export DATASOURCE_URL="<URL>"
export DATASOURCE_USER="<USER>"
export DATASOURCE_PASSWORD="<PASSWORD>"

I also have my application in webapps/myapp_prodwhich my variables are used.
Now let's say I want to deploy the same application again, but already here webapps/myapp_devand I want my variables to have a different value there, that is, I want to specify other data for the connection to the database (use another database)

How can I do this do? Is there any design else ifin setenv.shor is it possible to create different setenv.shones for different webapps? How to solve this without changing the application itself?