Ignore node modules when running integration tests in Docker

Node modules can take a lot of space, causing the copy of the local Git
working directory of Nextcloud to the container to be slow. However,
they are not needed when running the integration tests, so now they are
excluded from the copy.

Signed-off-by: Daniel Calviño Sánchez <danxuliu@gmail.com>

tests/integration/run-docker.sh

@@ -158,6 +158,7 @@ function prepareDocker() {
 		--exclude="./data" \
 		--exclude="./data-autotest" \
 		--exclude="./tests" \
+		--exclude="node_modules" \
 		--directory=../../../../ \
 		.