Restore docker-compose check in scripts

helper-scripts/_cold-standby.sh

@@ -258,7 +258,7 @@ echo "OK"
     -i "${REMOTE_SSH_KEY}" \
     ${REMOTE_SSH_HOST} \
     -p ${REMOTE_SSH_PORT} \
-    $COMPOSE_COMMAND -f "${SCRIPT_DIR}/../docker-compose.yml" pull --no-parallel --quiet 2>&1 ; then
+    docker-compose -f "${SCRIPT_DIR}/../docker-compose.yml" pull --no-parallel --quiet 2>&1 ; then
       >&2 echo -e "\e[31m[ERR]\e[0m - Could not pull images on remote"
   fi