diff --git a/ci_build/outer_launch_tests.sh b/ci_build/outer_launch_tests.sh
index a32f887..b79b495 100755
--- a/ci_build/outer_launch_tests.sh
+++ b/ci_build/outer_launch_tests.sh
@@ -2,10 +2,13 @@
 
 # Builds a test image and runs the tests inside.
 
-set -eu -o pipefail
+set -eux -o pipefail
 
 IMAGE_NAME=tensorflow/haskell/ci_build:lts8
 
-git submodule update
+# Make sure we are in the root directory of the repositiory.
+cd "$( dirname "$0" )"/..
+
+git submodule update --init --recursive
 docker build -t $IMAGE_NAME -f ci_build/Dockerfile .
 docker run $IMAGE_NAME stack build --pedantic --test