Better error messages on the CI

This makes it so that when a ci target fails, we don't get red herring
error messages about .ok files not existing.

Since this requires bash, we make a helper script that invokes bash, so
as to not depend on bash in general.

1 files changed, 8 insertions, 0 deletions

diff --git a/dev/ci/ci-pipe-tee.sh b/dev/ci/ci-pipe-tee.sh
new file mode 100755
index 0000000000..7b1ccddf23
--- /dev/null
+++ b/dev/ci/ci-pipe-tee.sh
@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+
+# Use this script to preserve the exit code of $1 when piping it to
+# `tee $2`.  We have a separate script, because this only works in
+# bash, which we don't require project-wide.
+
+"$1" 2>&1 | tee "$2"
+exit ${PIPESTATUS[0]}