ci: Do not hide ci directory (#6410)

ci/script.sh

@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+
+set -e
+set -o pipefail
+
+if [[ -n "${CI_TARGET}" ]]; then
+  make "${CI_TARGET}"
+  exit 0
+fi
+
+# This will pass the environment variables down to a bash process which runs
+# as $USER, while retaining the environment variables defined and belonging
+# to secondary groups given above in usermod.
+if [[ "${TRAVIS_OS_NAME}" == osx ]]; then
+  sudo -E su "${USER}" -c "ci/run_tests.sh"
+else
+  ci/run_tests.sh
+fi