[build] create a clean_docker_images profile

Makefile

@@ -98,3 +98,6 @@ clean reset showtag docker-cleanup sonic-slave-build sonic-slave-bash :
 # Freeze the versions, see more detail options: scripts/versions_manager.py freeze -h
 freeze:
 	@scripts/versions_manager.py freeze $(FREEZE_VERSION_OPTIONS)
+
+clean_docker_images:
+	@scripts/clean_docker_images.sh

scripts/clean_docker_images.sh

@@ -0,0 +1,41 @@
+#!/bin/sh
+
+DOCKER_CMD=docker
+if [ ! `which $DOCKER_CMD` ]
+then  echo "no docker command available" >&2
+    exit 1
+fi
+#if "docker ps" cannot be run without error, prepend sudo
+if ( ! $DOCKER_CMD ps >/dev/null 2>&1 );then
+    echo "docker command only usable as root, using sudo" >&2
+    DOCKER_CMD="sudo docker"
+fi
+
+cd $(dirname $0)
+cd ..
+IMAGES_LIST=$($DOCKER_CMD image ls "sonic*" | sed 's/  */\t/g' | cut -f3 | tail -n +2)
+
+if [ -z $IMAGES_LIST ]; then
+    echo "No docker image to delete"
+    exit 0
+fi
+
+echo -n "Run '$DOCKER_CMD image rm -f $(echo $IMAGES_LIST) ' (y/n)?"
+initial_stty_cfg=$(stty -g)
+stty raw -echo
+answer=$( while ! head -c 1 | grep -i '[yn]' ;do true ;done )
+stty $initial_stty_cfg
+if echo "$answer" | grep -iq "^y" ;then
+    $DOCKER_CMD image rm -f $(echo $IMAGES_LIST)
+else
+    echo "Nothing done"
+    exit 0
+fi
+echo -n "Run '$DOCKER_CMD image prune -af' (y/n)?"
+initial_stty_cfg=$(stty -g)
+stty raw -echo
+answer=$( while ! head -c 1 | grep -i '[yn]' ;do true ;done )
+stty $initial_stty_cfg
+if echo "$answer" | grep -iq "^y" ;then
+    $DOCKER_CMD image prune -af
+fi