diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..0dc7b4b
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/.vscode
\ No newline at end of file
diff --git a/ci/build.sh b/ci/build.sh
index 56221c5..baae301 100755
--- a/ci/build.sh
+++ b/ci/build.sh
@@ -1,5 +1,7 @@
 #/usr/bin/env bash
 
+set -eu
+
 APP="$1"
 
 echo "Checking out $APP"