add container variants

Author: yodaaut

.build/images/dietpi-installer

@@ -450,7 +450,8 @@ _EOF_
 		esac
 		G_WHIP_MENU_ARRAY+=(
 			'' '●─ Other '
-			'75' ': Container image'
+			'75.1' ': Container image without network'
+			'75.2' ': Container image with network'
 			'22' ': Generic device'
 		)
 
@@ -864,8 +865,8 @@ setenv rootuuid "true"' /boot/boot.cmd
 		local apackages
 		mapfile -t apackages < <(apt-mark showmanual)
 
-		# Containers: keep necessary packages to avoid losing network connectivity
-		if [[ ${apackages[0]} && $G_HW_MODEL == 75 ]]
+		# Containers with network: keep necessary packages to avoid losing network connectivity
+		if [[ ${apackages[0]} && $G_HW_MODEL == 75 && $HW_VARIANT == 2 ]]
 		then
 			rpackages=(
 				'ifupdown'