App is not reproducible

[emanuelb]

See walletscrutiny review at:
https://walletscrutiny.com/android/com.mfcoin.wallet.dev/

and my Containerfile to build the app:
https://gitlab.com/walletscrutiny/walletScrutinyCom/-/issues/162#note_528213896

both didn't result in a reproducible app when comparing with app in google-play.