From 59b1db76c8bf8124f3cf92c92f5ef2140c6220c0 Mon Sep 17 00:00:00 2001
From: Michael Bridgen <mikeb@squaremobius.net>
Date: Fri, 3 Oct 2014 20:08:32 +0100
Subject: [PATCH] Added Makefile and updated Dockerfile

The Dockerfile is now more like the weave one, with a scratch layer
underneath.

Makefile taken more or less from weave, too; except, it uses
environment variables to cross-compile the binary (which should
probably be done for weave as well)
---
 dns/Dockerfile |  8 +++++---
 dns/Makefile   | 20 ++++++++++++++++++++
 2 files changed, 25 insertions(+), 3 deletions(-)
 create mode 100644 dns/Makefile

diff --git a/dns/Dockerfile b/dns/Dockerfile
index b4feddc1..181bcbbc 100644
--- a/dns/Dockerfile
+++ b/dns/Dockerfile
@@ -1,3 +1,5 @@
-FROM ubuntu
-EXPOSE 53/udp
-ADD ./dns /home/dns
+FROM scratch
+# EXPOSE 53/udp
+WORKDIR /home/weave
+ADD ./dns /home/weave/weavedns
+ENTRYPOINT ["/home/weave/weavedns"]
diff --git a/dns/Makefile b/dns/Makefile
new file mode 100644
index 00000000..63939da5
--- /dev/null
+++ b/dns/Makefile
@@ -0,0 +1,20 @@
+IMAGE:=/tmp/weavedns.tar
+
+.DEFAULT: docker-image
+
+all: docker-image
+
+dns: ../*.go main.go
+	go get && GOARCH=amd64 GOOS=linux go build -v
+
+.PHONY: docker-image
+
+docker-image: $(IMAGE)
+
+$(IMAGE): Dockerfile dns
+	sudo -E docker build --rm -t zettio/weavedns .
+	sudo -E docker save zettio/weavedns > $(IMAGE)
+
+clean:
+	-sudo docker rmi zettio/weavedns
+	rm -f dns $(IMAGE)