From bb3f52b2656cdcc54dcacba43528c6194a8901e7 Mon Sep 17 00:00:00 2001
From: Mathias Beaulieu-Duncan <mathias@openharbor.io>
Date: Tue, 3 Feb 2026 17:17:44 -0500
Subject: [PATCH] Strip unused SDK components to reduce image size

Remove templates, TestHostNetFramework, and DotnetTools from SDK image.
These are not needed for dotnet restore/build/publish and save ~124 MB.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
---
 dockerfiles/sdk.Dockerfile | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/dockerfiles/sdk.Dockerfile b/dockerfiles/sdk.Dockerfile
index 75b7790..99f1220 100644
--- a/dockerfiles/sdk.Dockerfile
+++ b/dockerfiles/sdk.Dockerfile
@@ -2,6 +2,10 @@ FROM scratch
 ARG TARGETARCH
 ADD build-${TARGETARCH}/sdk/rootfs.tar.gz /
 COPY dotnet-${TARGETARCH}/sdk/ /usr/share/dotnet/
+# Strip components not needed for building
+RUN rm -rf /usr/share/dotnet/templates \
+           /usr/share/dotnet/sdk/*/TestHostNetFramework \
+           /usr/share/dotnet/sdk/*/DotnetTools
 ENV DOTNET_ROOT=/usr/share/dotnet
 ENV PATH="/usr/share/dotnet:${PATH}"
 ENV DOTNET_RUNNING_IN_CONTAINER=true