Modify MEDIA_TYPES and add MODERN_MEDIA_TYPES

Updated accepted upload mime types and added modern media types.

.env.docker.example

@@ -24,8 +24,8 @@ IMAGE_QUALITY="80"
 MAX_PHOTO_SIZE="15000"
 MAX_CAPTION_LENGTH="500"
 MAX_ALBUM_LENGTH="4"
-# Accepted upload mime types. webp/avif/jxl require the vips (or imagick) driver.
-MEDIA_TYPES="image/jpeg,image/jpg,image/png,image/gif,image/webp,image/avif,image/jxl"
+MEDIA_TYPES="image/jpeg,image/jpg,image/png,image/gif" # Accepted upload mime types. 
+MODERN_MEDIA_TYPES="image/avif,image/jxl,image/webp" # webp/avif/jxl require the vips driver.
 
 # Instance URL Configuration
 # IMPORTANT: Update these with your actual domain