From 5ccbb4bf439418b5ded2e53ee1850677c2001f50 Mon Sep 17 00:00:00 2001
From: Tianon Gravi <admwiggin@gmail.com>
Date: Tue, 11 Aug 2015 15:12:26 -0700
Subject: [PATCH] Enhance "generate-stackbrew-library.sh" to only take into
 account changes to the Dockerfile or files from COPY in the Dockerfile for
 choosing the commit hash for a particular directory

---
 generate-stackbrew-library.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/generate-stackbrew-library.sh b/generate-stackbrew-library.sh
index 1eec0df..c8cdeab 100755
--- a/generate-stackbrew-library.sh
+++ b/generate-stackbrew-library.sh
@@ -3,7 +3,7 @@ set -e
 
 cd "$(dirname "$(readlink -f "$BASH_SOURCE")")"
 url='git://github.com/docker-library/julia'
-commit=$(git log -1 --format="format:%H" -- Dockerfile)
+commit="$(git log -1 --format='format:%H' -- Dockerfile $(awk 'toupper($1) == "COPY" { for (i = 2; i < NF; i++) { print $i } }' Dockerfile))"
 fullVersion="$(grep -m1 'ENV JULIA_VERSION' Dockerfile | cut -d' ' -f3)"
 version="${fullVersion%[.-]*}"