From b71e672a3f6811efd3873443564184c53b534886 Mon Sep 17 00:00:00 2001
From: Brad Warren <bmw@eff.org>
Date: Fri, 16 Feb 2018 10:23:50 -0800
Subject: [PATCH] try build hooks

---
 certbot-dns-cloudflare/Dockerfile  | 3 ++-
 certbot-dns-cloudflare/hooks/build | 2 ++
 2 files changed, 4 insertions(+), 1 deletion(-)
 create mode 100644 certbot-dns-cloudflare/hooks/build

diff --git a/certbot-dns-cloudflare/Dockerfile b/certbot-dns-cloudflare/Dockerfile
index 24c9848b2..14d0ff8a1 100644
--- a/certbot-dns-cloudflare/Dockerfile
+++ b/certbot-dns-cloudflare/Dockerfile
@@ -1,4 +1,5 @@
-FROM certbot/certbot:rolling
+ARG CACHE_TAG=latest
+FROM certbot/certbot:${CACHE_TAG}
 
 COPY . src/certbot-dns-cloudflare
 
diff --git a/certbot-dns-cloudflare/hooks/build b/certbot-dns-cloudflare/hooks/build
new file mode 100644
index 000000000..39fc4f7ea
--- /dev/null
+++ b/certbot-dns-cloudflare/hooks/build
@@ -0,0 +1,2 @@
+#!/bin/bash
+docker build --build-arg BUILD_DATE="$CACHE_TAG" -t "$IMAGE_NAME" .