From 37d0c4ce23de2e6471980cbb5e4590cf83a3ce8e Mon Sep 17 00:00:00 2001
From: Cody Soyland <cody@soyland.org>
Date: Mon, 8 May 2017 14:41:33 -0500
Subject: [PATCH] Use Docker multi-stage build in Dockerfile

This utilizes Docker multi-stage builds to produce a minimal Docker
image. Requires Docker 17.05.0.
---
 Dockerfile | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index 48fbb1de0..dfdac1795 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.8.1
+FROM golang:1.8.1 as builder
 
 MAINTAINER Pilosa Corp. <dev@pilosa.com>
 
@@ -6,9 +6,6 @@ ARG ldflags=''
 ARG GLIDE="https://github.com/Masterminds/glide/releases/download/v0.12.3/glide-v0.12.3-linux-amd64.tar.gz"
 ARG GLIDE_HASH="d6d3816c70fba716466e7381a9c06cb31565a3b87acb5bad9dd3beb0a9f9b0f8"
 
-EXPOSE 10101
-VOLUME /data
-
 COPY . /go/src/github.com/pilosa/pilosa
 
 RUN wget ${GLIDE} -O /go/glide.tar.gz -q \
@@ -17,9 +14,14 @@ RUN wget ${GLIDE} -O /go/glide.tar.gz -q \
     && [ "$(sha256sum /go/bin/glide | cut -d' ' -f1)" = "$GLIDE_HASH" ] \
     && cd /go/src/github.com/pilosa/pilosa \
     && make vendor \
-    && CGO_ENABLED=0 go install -a -ldflags "$ldflags" github.com/pilosa/pilosa/cmd/pilosa \
-    && mv /go/bin/pilosa /pilosa \
-    && rm -rf /go
+    && CGO_ENABLED=0 go install -a -ldflags "$ldflags" github.com/pilosa/pilosa/cmd/pilosa
+
+FROM scratch
+
+COPY --from=builder /go/bin/pilosa /pilosa
+
+EXPOSE 10101
+VOLUME /data
 
 ENTRYPOINT ["/pilosa"]
 CMD ["server", "--data-dir", "/data"]