From 452fe86288fa5ad396cac6af84e8fc7a680b15d7 Mon Sep 17 00:00:00 2001
From: Xavier Del Campo Romero <xavi.dcr@tutanota.com>
Date: Mon, 12 Feb 2024 23:56:29 +0100
Subject: Use scratch on final step

This reduce the final image size significantly.
---
 OpenSSL/3.1.1-minimal/Dockerfile | 4 +++-
 cJSON/1.7.16/Dockerfile          | 4 +++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/OpenSSL/3.1.1-minimal/Dockerfile b/OpenSSL/3.1.1-minimal/Dockerfile
index b99eb8d..770ebc9 100644
--- a/OpenSSL/3.1.1-minimal/Dockerfile
+++ b/OpenSSL/3.1.1-minimal/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine
+FROM alpine as base
 RUN apk update && apk add \
 	git \
 	make \
@@ -17,3 +17,5 @@ RUN ./config -ffunction-sections -fdata-sections \
 RUN make -j$(nproc --all)
 RUN make test
 RUN make install
+FROM scratch
+COPY --from=base /opt/spm/openssl-3.1.1 /opt/spm/openssl-3.1.1
diff --git a/cJSON/1.7.16/Dockerfile b/cJSON/1.7.16/Dockerfile
index e14a706..bb83f99 100644
--- a/cJSON/1.7.16/Dockerfile
+++ b/cJSON/1.7.16/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine
+FROM alpine as base
 ARG PREFIX=/opt/spm/cjson-1.7.16
 RUN apk update && apk add \
 	git \
@@ -15,3 +15,5 @@ RUN cmake -B build \
 	-DCMAKE_C_FLAGS="-ffunction-sections -fdata-sections"
 RUN cmake --build build/ --parallel $(nproc --all)
 RUN cmake --install build/
+FROM scratch
+COPY --from=base /opt/spm/cjson-1.7.16 /opt/spm/cjson-1.7.16
-- 
cgit v1.2.3