From 3794f4cf365f9105cc33bb3cb0ff693f835628a0 Mon Sep 17 00:00:00 2001
From: Claude <noreply@anthropic.com>
Date: Fri, 20 Mar 2026 10:42:46 +0000
Subject: [PATCH] Fix Dockerfile heredoc parse error in RUN if block
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Use printf instead of heredoc for cargo config — heredoc inside a
conditional RUN block confuses Docker's parser (fi becomes an unknown
instruction). The config is always written; unused linker entries are
harmless on native builds.
---
 infra/Dockerfile.server | 23 ++++++++++-------------
 1 file changed, 10 insertions(+), 13 deletions(-)

diff --git a/infra/Dockerfile.server b/infra/Dockerfile.server
index f6239b9..b3a1161 100644
--- a/infra/Dockerfile.server
+++ b/infra/Dockerfile.server
@@ -29,19 +29,16 @@ RUN case "${TARGETARCH}:${TARGETVARIANT}" in \
     esac > /rust_target && \
     rustup target add "$(cat /rust_target)"
 
-# Tell Cargo which cross-linker to use — only needed when cross-compiling.
-RUN if [ "${BUILDPLATFORM}" != "${TARGETPLATFORM}" ]; then \
-      mkdir -p /root/.cargo && cat >> /root/.cargo/config.toml <<'EOF'
-[target.aarch64-unknown-linux-gnu]
-linker = "aarch64-linux-gnu-gcc"
-
-[target.armv7-unknown-linux-gnueabihf]
-linker = "arm-linux-gnueabihf-gcc"
-
-[target.arm-unknown-linux-gnueabi]
-linker = "arm-linux-gnueabi-gcc"
-EOF
-    fi
+# Tell Cargo which cross-linker to use (ignored on native builds).
+RUN mkdir -p /root/.cargo && printf '\
+[target.aarch64-unknown-linux-gnu]\n\
+linker = "aarch64-linux-gnu-gcc"\n\
+\n\
+[target.armv7-unknown-linux-gnueabihf]\n\
+linker = "arm-linux-gnueabihf-gcc"\n\
+\n\
+[target.arm-unknown-linux-gnueabi]\n\
+linker = "arm-linux-gnueabi-gcc"\n' >> /root/.cargo/config.toml
 
 WORKDIR /build