From 7eb6b35cb04bcf460f21a96db214fcae1fd0c51a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Laurent=20VERDO=C3=8FA?= <verdoialaurent@gmail.com>
Date: Sat, 9 Nov 2019 10:26:59 +0100
Subject: [PATCH] Make image build process a bit simpler

Take full leverage of multi-stage docker build.
---
 .compile_binaries | 3 +--
 Dockerfile        | 2 +-
 2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/.compile_binaries b/.compile_binaries
index d015411..2585c14 100755
--- a/.compile_binaries
+++ b/.compile_binaries
@@ -23,8 +23,7 @@ build_linux() {
   # Linux Alpine based Docker image
   name="$DOCKER_BASE-alpine"
   DOCKER_BUILDS="$DOCKER_BUILDS $name"
-  sed -e '/DELETE-MARKER/,$d' Dockerfile > Dockerfile.alpine
-  docker build -f Dockerfile.alpine -t "$name:current" .
+  docker build -f Dockerfile -t "$name:current" --target alpine .
   docker run "$name:current" sh -c 'shellcheck --version'
 }
 
diff --git a/Dockerfile b/Dockerfile
index 2b65291..6ca370e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -22,7 +22,7 @@ RUN mkdir -p /out/bin && \
   cp shellcheck  /out/bin/
 
 # Resulting Alpine image
-FROM alpine:latest
+FROM alpine:latest AS alpine
 LABEL maintainer="Vidar Holen <vidar@vidarholen.net>"
 COPY --from=build /out /