Sign APK builds from CI

moneymgr_mobile/android/ci_write_keystore.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+
+SCRIPT_DIR="$(temp=$( realpath "$0"  ) && dirname "$temp")"
+
+KEYSTORE_PATH="$SCRIPT_DIR/keystore.jks"
+PROPERTIES_PATH="$SCRIPT_DIR/publish_key.properties"
+
+[ ! -n "$JKS_KEYSTORE" ] && echo 'Missing JKS_KEYSTORE variable!'&& exit 1
+[ ! -n "$JKS_KEYSTORE_PASSWORD" ] && echo 'Missing JKS_KEYSTORE_PASSWORD variable!' && exit 1
+
+# Write keystore
+echo $JKS_KEYSTORE | base64 -d > "$KEYSTORE_PATH"
+
+# Write keystore config
+cat > "$PROPERTIES_PATH" <<_EOF
+storePassword=$JKS_KEYSTORE_PASSWORD
+keyPassword=$JKS_KEYSTORE_PASSWORD
+keyAlias=moneymgr
+storeFile="$KEYSTORE_PATH"
+_EOF