From 6a761c4655d07e89e1e3724be9761b6fd2511fd2 Mon Sep 17 00:00:00 2001
From: Carl Kittelberger <icedream@icedream.pw>
Date: Sun, 3 Jun 2018 01:01:08 +0200
Subject: [PATCH] Use multistage build for a fully static Docker binary build.

---
 Dockerfile | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index 472b3f1..324296d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.10
+FROM golang:1.10 AS builder
 
 RUN mkdir -p /go/src/app
 WORKDIR /go/src/app
@@ -7,8 +7,11 @@ ARG ROOT_IMPORT_PATH=github.com/icedream/embot
 COPY . /go/src/app
 RUN \
 	mkdir -p "$GOPATH/src/$(dirname "$ROOT_IMPORT_PATH")" &&\
-	ln -sf /go/src/app "$GOPATH/src/$ROOT_IMPORT_PATH" &&\
-	go-wrapper download &&\
-	go-wrapper install
+	ln -sf "$GOPATH/src/app" "$GOPATH/src/$ROOT_IMPORT_PATH" &&\
+	CGO_ENABLED=0 go build -a -ldflags '-extldflags "-static"' -o /soccerbot "$ROOT_IMPORT_PATH"
 
-CMD ["go-wrapper", "run"]
+###
+
+FROM scratch
+COPY --from=builder /soccerbot /
+ENTRYPOINT ["/soccerbot"]