From fcf7ca985fd68541d557e95d2b93b7cb812e7824 Mon Sep 17 00:00:00 2001
From: Akim Demaille <akim.demaille@docker.com>
Date: Mon, 30 Apr 2018 13:36:46 +0200
Subject: [PATCH] Mac: a `make check` that checks for useless images

Signed-off-by: Akim Demaille <akim.demaille@docker.com>
---
 docker-for-mac/Makefile | 10 ++++++++++
 1 file changed, 10 insertions(+)
 create mode 100644 docker-for-mac/Makefile

diff --git a/docker-for-mac/Makefile b/docker-for-mac/Makefile
new file mode 100644
index 0000000000..3f9dd5a0dc
--- /dev/null
+++ b/docker-for-mac/Makefile
@@ -0,0 +1,10 @@
+.PHONY:
+check:
+	for img in $$(git ls-files images); do	\
+	  base=$$(basename "$$img");		\
+	  if ! git grep -q -F "$$base"; then	\
+	    echo >&2 "unused image: $$img";	\
+	    pass=false;				\
+	  fi;					\
+	done;					\
+	$$pass