Use dc variable in clickhouse step (#3658)

Author: aminvakil

install/upgrade-clickhouse.sh

@@ -1,7 +1,7 @@
 echo "${_group}Upgrading Clickhouse ..."
 
 # First check to see if user is upgrading by checking for existing clickhouse volume
-if docker compose ps -a | grep -q clickhouse; then
+if $dc ps -a | grep -q clickhouse; then
   # Start clickhouse if it is not already running
   $dc up --wait clickhouse