From 37aad2a29a6212178b60f9ea31394fc0dc424343 Mon Sep 17 00:00:00 2001
From: Eric Anderson <ejona@google.com>
Date: Tue, 22 Sep 2015 18:46:12 -0700
Subject: [PATCH] Prevent failed docker builds from accumulating

By default docker does not clean up temporary images when the build
fails to allow the user to inspect the state of the container to
determine what went wrong. Those images don't help us at all and just
accumulate until disk usage is 100%.
---
 tools/gce_setup/shared_startup_funcs.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/gce_setup/shared_startup_funcs.sh b/tools/gce_setup/shared_startup_funcs.sh
index ffa08751535..a0b45e94587 100755
--- a/tools/gce_setup/shared_startup_funcs.sh
+++ b/tools/gce_setup/shared_startup_funcs.sh
@@ -448,7 +448,7 @@ grpc_dockerfile_install() {
   }
 
   # TODO(temiola): maybe make cache/no-cache a func option?
-  sudo docker build $cache_opt -t $image_label $dockerfile_dir || {
+  sudo docker build --force-rm=true $cache_opt -t $image_label $dockerfile_dir || {
     echo "$FUNCNAME:: build of $image_label <- $dockerfile_dir"
     return 1
   }