Use keystore in project

gradle.properties

@@ -21,3 +21,10 @@ android.useAndroidX=true
 android.enableJetifier=true
 android.enableAppCompileTimeRClass=true
 android.nonTransitiveRClass=true
+
+# signing environment variable
+signStoreFile=keystore/androidkey.jks
+signStorePassword=000000
+signkeyAlias=key0
+signkeyPassword=000000
+