How to select .env.staging in XCode?

[JuMalIO]

In github readme I see that you can create pre-build script which copies .env.staging -> .env and build. It works. But I dont want .env file change everytime I build with different configuration. How do I use .env.staging instead of copying?

I have tried export ENVFILE=.env.staging in Bundle react native code and images in Build phases, but that does not seem to work. Any ideas?

[rifad4u]

echo ".env. staging" > /tmp/envfile

Edit Scheme --> Build -> Pre Actions -> Copy above
Do the same for Run, Test, Archive and for all other targets also