Add release signing config for persistent keystore

app/build.gradle.kts

@@ -9,6 +9,15 @@ android {
     namespace = "com.adamaps.varroa"
     compileSdk = 34
 
+    signingConfigs {
+        create("release") {
+            storeFile = file("/keystore/varroa-release.keystore")
+            storePassword = "***REMOVED***"
+            keyAlias = "varroa-release"
+            keyPassword = "***REMOVED***"
+        }
+    }
+
     defaultConfig {
         applicationId = "com.adamaps.varroa"
         minSdk = 26
@@ -24,6 +33,7 @@ android {
     buildTypes {
         release {
             isMinifyEnabled = false
+            signingConfig = signingConfigs.getByName("release")
             proguardFiles(
                 getDefaultProguardFile("proguard-android-optimize.txt"),
                 "proguard-rules.pro"