Add section to generated drop-in

systemd-generator/huami-token-generator

@@ -27,7 +27,11 @@ main() {
   fi
 
   mkdir -p "$(dirname "$DROPIN_FILE")"
-  echo "WorkingDirectory=${ZEPP_AGPS_TARGET_DIR}" >"$DROPIN_FILE"
+  cat <<EOF >"$DROPIN_FILE"
+# Generated by huami-token-generator
+[Service]
+WorkingDirectory=${ZEPP_AGPS_TARGET_DIR}
+EOF
 }
 
 # Check if the script is being run directly, not sourced