From b449344f789e66fc104591622b427c37d63a411e Mon Sep 17 00:00:00 2001
From: "W. Trevor King" <wking@tremily.us>
Date: Thu, 13 Feb 2014 14:39:54 -0800
Subject: [PATCH] build.sh: Add BUILD_OPTS for custom build options

For example, to rebuild a package without using the cache:

  $ REPOS=docker-registry BUILD_OPTS=--no-cache ./build.sh

which lets you update your image after the upstream repository has
changed.
---
 build.sh | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/build.sh b/build.sh
index 148c30d..2926e7d 100755
--- a/build.sh
+++ b/build.sh
@@ -38,6 +38,7 @@ PORTAGE_SIG="${PORTAGE_SIG:-${PORTAGE}.gpgsig}"
 
 DOCKER_IO=$(command -v docker.io)
 DOCKER="${DOCKER:-${DOCKER_IO:-docker}}"
+BUILD_OPTS="${BUILD_OPTS:-}"
 
 REPOS="${REPOS:-
 	portage
@@ -203,7 +204,7 @@ build_repo()
 				< "${REPO}/Dockerfile.template" > "${REPO}/Dockerfile"
 
 		msg "build ${NAMESPACE}/${REPO}:${DATE}"
-		"${DOCKER}" build -t "${NAMESPACE}/${REPO}:${DATE}" "${REPO}" || die "failed to build"
+		"${DOCKER}" build ${BUILD_OPTS} -t "${NAMESPACE}/${REPO}:${DATE}" "${REPO}" || die "failed to build"
 	fi
 	msg "tag ${NAMESPACE}/${REPO}:latest"
 	"${DOCKER}" tag -f "${NAMESPACE}/${REPO}:${DATE}" "${NAMESPACE}/${REPO}:latest" || die "failed to tag"
-- 
2.26.2