Prevent CI job prepare:back to try spinning dependant services

Author: David Ferlay

Makefile

@@ -79,7 +79,7 @@ endif
 
 ## Install backend dependencies
 back:
-	docker-compose up -d --remove-orphans php # PHP container is required for composer
+	docker-compose up -d --remove-orphans --no-deps php # PHP container is required for composer
 	$(call php-0, apk add --no-cache $(ADD_PHP_EXT))
 	$(call php-0, kill -USR2 1)
 ifdef INSTALL_DEV_DEPENDENCIES