green_to_apha improvement

src/main/scripts/green_to_apha.sh

@@ -1,3 +1,6 @@
 #!/bin/bash
 
-magick "$1" -transparent "#00ff00" "$1"
+for file in "$1"/*.png; do
+  echo "$file"
+  magick "$file" -transparent "#00ff00" "$file"
+done