feat: Improve boolean helpers (#91)

src/entrypoint.sh

@@ -34,15 +34,23 @@ strip() {
 }
 
 enabled() {
-  case "$(strip "${1:-}")" in
-    Y|y|YES|Yes|yes|TRUE|True|true|1|ON|On|on) return 0 ;;
+
+  local value
+  value=$(strip "${1:-}")
+
+  case "${value,,}" in
+    y|yes|true|1|on|enable|enabled) return 0 ;;
     *) return 1 ;;
   esac
 }
 
 disabled() {
-  case "$(strip "${1:-}")" in
-    N|n|NO|No|no|FALSE|False|false|0|OFF|Off|off) return 0 ;;
+
+  local value
+  value=$(strip "${1:-}")
+
+  case "${value,,}" in
+    n|no|none|false|0|off|disable|disabled) return 0 ;;
     *) return 1 ;;
   esac
 }