Add production .env file to prevent data fragmentation

[dtinth]

For the software to be free, users should be able to compile and run the application from the source code by themselves instead of using the version distributed in the app store.

However, right now if a user does this, the app will talk to the development API server (https://api.dev.thaialert.com). If I understand correctly, that would most likely mean contract tracing will be uneffective for people who run the app from source — and this is my main concern.

So, should a production env file be added to this project? (IMO, it is public information anyways, since they can be easily extracted from the Play Store APK file.) If not, then what would be the best way to address the above concern?