is V1 support getStaticProps runtime variable ?

[aNyMoRe0505]

version: 1.7.4

reproduce repo: https://github.com/aNyMoRe0505/runtime-env-test

steps: clone -> npm ci -> npm run build -> npm run start -> open localhost:3000/client-side

Thank you for creating this repo.
I'd like to ask if getStaticProps supports runtime environment variables.
My understanding is that variables need to be determined during the build, making it challenging to achieve Build once, deploy many.

However, I noticed that version 1 supports getStaticProps, so I'm wondering if I've set something up incorrectly. Thank you.