Fixed Plugin Inastaller Option

apps/kanboard/config.json

@@ -12,5 +12,13 @@
   "author": "Frédéric Guillot",
   "source": "https://github.com/kanboard/kanboard",
   "form_fields": [
+    {
+    "type": "text",
+    "label": "Enable Plugin Installer (true or false)",
+    "max": 5,
+    "min": 4,
+    "required": true,
+    "env_variable": "PLUGIN_INSTALLER"
+    }
 	]
 }

apps/kanboard/docker-compose.yml

@@ -5,7 +5,7 @@ services:
     container_name: kanboard
     image: kanboard/kanboard:v1.2.28
     environment:
-      - PLUGIN_INSTALLER=true
+      - PLUGIN_INSTALLER=${PLUGIN_INSTALLER}
     ports:
       - ${APP_PORT}:80
     restart: unless-stopped