L2SS-391: Wait for dsconfig to be up

docker-compose/Makefile

@@ -151,7 +151,8 @@ endif
 bootstrap: pull build # first start, initialise from scratch
 	$(MAKE) start elk-configure-host # configure host kernel for elk container
 	$(MAKE) start dsconfig # boot up containers to load configurations
-	../sbin/update_ConfigDb.sh ../CDB/LOFAR-ConfigDb.sh
+	sleep 5 # wait for dsconfig container to come up
+	../sbin/update_ConfigDb.sh ../CDB/LOFAR-ConfigDb.sh # load default configuration
 
 start: up ## start a service (usage: make start <servicename>)
 	if [ $(UNAME_S) = Linux ]; then touch ~/.Xauthority; chmod a+r ~/.Xauthority; fi