From 7eddf071559be8f754feaa207f8f93440b05243f Mon Sep 17 00:00:00 2001
From: Amir Zarrinkafsh <nightah@me.com>
Date: Thu, 19 Mar 2020 16:15:54 +1100
Subject: [PATCH] [Buildkite] Clean Docker environment on exit (#734)

---
 .buildkite/hooks/post-command | 2 +-
 .buildkite/hooks/pre-exit     | 6 ++++++
 2 files changed, 7 insertions(+), 1 deletion(-)
 create mode 100755 .buildkite/hooks/pre-exit

diff --git a/.buildkite/hooks/post-command b/.buildkite/hooks/post-command
index d485aaefc..b9a30d822 100755
--- a/.buildkite/hooks/post-command
+++ b/.buildkite/hooks/post-command
@@ -5,7 +5,7 @@ set +u
 if [[ $BUILDKITE_LABEL =~ ":selenium:" ]] || [[ $BUILDKITE_LABEL =~ ":docker: Build Image" ]]; then
   CONTAINERS=$(docker ps -a -q)
   if [[ ${CONTAINERS} != "" ]]; then
-    echo "--- :docker: Clean environment"
+    echo "--- :docker: Remove lingering containers"
     docker rm -f ${CONTAINERS}
   fi
 fi
diff --git a/.buildkite/hooks/pre-exit b/.buildkite/hooks/pre-exit
new file mode 100755
index 000000000..6a1767f98
--- /dev/null
+++ b/.buildkite/hooks/pre-exit
@@ -0,0 +1,6 @@
+#!/bin/bash
+
+set +u
+
+echo "--- :docker: Clean environment"
+docker system prune -af --volumes
\ No newline at end of file