From 366e5179dec9010ba0f6b00ce4fe5b6c0d4c495f Mon Sep 17 00:00:00 2001
From: Xavier Del Campo Romero <xavi92@disroot.org>
Date: Thu, 9 Oct 2025 13:25:33 +0200
Subject: Add zlib-1.3.1

---
 zlib/1.3.1/Dockerfile | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 zlib/1.3.1/Dockerfile

diff --git a/zlib/1.3.1/Dockerfile b/zlib/1.3.1/Dockerfile
new file mode 100644
index 0000000..ee17e53
--- /dev/null
+++ b/zlib/1.3.1/Dockerfile
@@ -0,0 +1,19 @@
+FROM alpine as base
+ARG PREFIX=/usr/local
+ARG DESTDIR=/opt/spm/zlib-1.3.1
+RUN apk update && apk add \
+	make \
+	gcc \
+	musl-dev \
+	wget
+RUN wget https://zlib.net/zlib-1.3.1.tar.gz
+RUN tar -xf zlib-1.3.1.tar.gz
+WORKDIR /build-zlib
+RUN CFLAGS='-ffunction-sections -fdata-sections -Os' \
+    ../zlib-1.3.1/configure \
+    --prefix=$PREFIX \
+    --static
+RUN make -j$(nproc)
+RUN make install DESTDIR=$DESTDIR
+FROM scratch
+COPY --from=base /opt/spm/zlib-1.3.1/usr/local /opt/spm/zlib-1.3.1
-- 
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