get file listing of root of Travis container

Author: mitchellkrogza

travis-ci/install-nginx2.sh

@@ -70,4 +70,6 @@ sudo $TRAVIS_BUILD_DIR/install-ngxblocker -h 2>&1
 sudo $TRAVIS_BUILD_DIR/install-ngxblocker -x 2>&1
 ls -la $TRAVIS_BUILD_DIR
 ls -la /etc/nginx
-ls -la /etc/nginx/conf.d
+ls -la /etc/nginx/conf.d
+cd /
+ls -la