Pre-pull some images before running integration tests

Author: adityaramani

Makefile

@@ -272,6 +272,9 @@ integration: init-block
 		mkdir -p $(APP_ROOT) ; \
 		find "$(APP_ROOT)" -mindepth 1 -maxdepth 1 ! -name kernels -exec rm -rf {} + ; \
 	fi
+	@echo Pre-pulling images for integration tests..
+	@bin/container image pull ghcr.io/linuxcontainers/alpine:3.20
+	@bin/container builder start && bin/container builder stop
 	@echo Running the integration tests...
 	@bin/container --debug system start --timeout 60 --enable-kernel-install $(SYSTEM_START_OPTS) && \
 	echo "Starting CLI integration tests" && \