Enable Plugins by default because it seems not to work work with custom field

apps/kanboard/config.json

@@ -12,13 +12,5 @@
   "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 = ${PLUGIN_INSTALLER}
+      - PLUGIN_INSTALLER = true
     ports:
       - ${APP_PORT}:80
     restart: unless-stopped

apps/kanboard/metadata/description.md

@@ -6,6 +6,9 @@ Kanboard is a free and open source Kanban project management software.
 Username: admin
 Password: admin
 
+## Hint
+**Plugins currently not installable via Kanboard Web Interface**
+
 - Kanban Board
 - Visualize your work
 - Limit your work in progress to focus on your goal