included do
    # Avatar upload
    has_attached_file :avatar, styles: ->(f) { avatar_styles(f) }, convert_options: { all: '+profile "!icc,*" +set date:modify +set date:create +set date:timestamp' }, processors: [:lazy_thumbnail]
    validates_attachment_content_type :avatar, content_type: IMAGE_MIME_TYPES
    validates_attachment_size :avatar, less_than: LIMIT