Fixed entrypoint chown statement (#304)

* Fix entrypoint

* Rescope chart actions

.github/workflows/charts.yaml

@@ -1,6 +1,9 @@
 name: Lint and Test Charts
 
-on: pull_request
+on:
+  pull_request:
+    paths:
+      - "charts/**"
 
 jobs:
   lint-chart:

entrypoint.sh

@@ -83,7 +83,7 @@ fi
 rm -rf "$BAK_PUBLIC_PATH"
 
 # Set permission for web server to create/update files (only <v4)
-if [[ ${str::1} -le 4 ]]; then 
+if [[ ${INVOICENINJA_VERSION::1} -le 4 ]]; then 
     chown -R "$INVOICENINJA_USER":www-data /var/www/app/storage /var/www/app/public /var/www/app/bootstrap
 fi