From 1f2fd1b48e4c11ab7f4c3cd5bd369c23bf56d112 Mon Sep 17 00:00:00 2001
From: Jay MOULIN <jaymoulin@gmail.com>
Date: Tue, 2 Jan 2018 21:03:46 +0100
Subject: Docker with builder - reduce image size

---
 Dockerfile | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index 98d79c0..9a8619e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,11 +1,12 @@
-FROM golang:latest
+FROM golang:latest as builder
 
 WORKDIR $GOPATH/src/github.com/zachlatta/sshtron
-
-RUN apt-get update && apt-get install openssh-client && \
-	ssh-keygen -t rsa -N "" -f id_rsa
-
 ADD . .
-RUN go get && go install
+RUN go get && CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o /usr/bin/sshtron .
 
+FROM alpine:latest
+
+COPY --from=builder /usr/bin/sshtron /usr/bin/
+RUN apk add --update --no-cache openssh-client && \
+	ssh-keygen -t rsa -N "" -f id_rsa
 ENTRYPOINT sshtron
-- 
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