add snap app refresh

update-lxc-container.sh

@@ -28,6 +28,9 @@ for i in $(lxc list type=container -c ns --format csv); do
     sleep 2
     lxc exec ${cont_name} -- sh -c "apt autoremove"
     sleep 2
+    echo -e $(date) "- Refresh snap packages"
+    lxc exec ${cont_name} -- bash -c "if [[ \$(which snap > /dev/null; echo \$?) == 0 ]]; then snap refresh ; fi"
+
     if [ "${i#*,}" == "STOPPED" ]; then
         echo $(date) "- Stop container ${cont_name}"
         stop_container ${cont_name} &