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fix(docker): proper CGO cross-compilation for caire with multi-arch toolchain

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Replace CGO_ENABLED=0 (which fails because gioui.org requires CGO on Linux)
with a proper C cross-compiler approach using Debian multi-arch packages.
Running caire-builder with --platform=\$BUILDPLATFORM avoids QEMU crashes on
Apple Silicon; the C cross-compiler bridges the CGO gap for the target arch.

Also adds SKIP_MODEL_DOWNLOADS=true to the CI docker build job to prevent
HuggingFace CDN 504s in CI (image structure is what matters there).
This commit is contained in:
Siddharth Kumar Sah
2026-04-15 23:17:17 +08:00
parent 57c78e65ba
commit 26f5bb8092
2 changed files with 41 additions and 7 deletions
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docker/Dockerfile
+40 -7
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@@ -40,14 +40,17 @@ RUN --mount=type=cache,id=turbo-cache,target=/app/.turbo \
# ============================================
# Run the Go toolchain on the native build platform to avoid QEMU crashes
# on Apple Silicon when cross-compiling for linux/amd64.
# caire imports gioui.org/app which requires CGO on Linux, so we use a
# proper C cross-compiler instead of CGO_ENABLED=0.
FROM --platform=$BUILDPLATFORM golang:1.23-bookworm AS caire-builder
ARG TARGETOS=linux
ARG TARGETARCH
# Graphics libs are only needed for native-arch CGO builds (the display window).
# For cross-arch builds we use CGO_ENABLED=0 — the server never shows a display.
RUN NATIVE=$(uname -m | sed 's/x86_64/amd64/;s/aarch64/arm64/') && \
# Install graphics libs and (for cross-arch builds) the appropriate C cross-compiler.
# Debian multi-arch lets us install target-arch headers alongside the native toolchain.
RUN set -e; \
NATIVE=$(uname -m | sed 's/x86_64/amd64/;s/aarch64/arm64/'); \
if [ "$TARGETARCH" = "$NATIVE" ]; then \
apt-get update && apt-get install -y --no-install-recommends \
libwayland-dev libx11-dev libx11-xcb-dev libxkbcommon-x11-dev \
@@ -55,15 +58,45 @@ RUN NATIVE=$(uname -m | sed 's/x86_64/amd64/;s/aarch64/arm64/') && \
libxrandr-dev libxinerama-dev libxi-dev libxxf86vm-dev \
libvulkan-dev libxfixes-dev pkg-config \
&& rm -rf /var/lib/apt/lists/*; \
elif [ "$TARGETARCH" = "amd64" ]; then \
dpkg --add-architecture amd64 && \
apt-get update && apt-get install -y --no-install-recommends \
crossbuild-essential-amd64 \
libwayland-dev:amd64 libx11-dev:amd64 libx11-xcb-dev:amd64 \
libxkbcommon-x11-dev:amd64 libgles2-mesa-dev:amd64 libegl1-mesa-dev:amd64 \
libffi-dev:amd64 libxcursor-dev:amd64 libxrandr-dev:amd64 \
libxinerama-dev:amd64 libxi-dev:amd64 libxxf86vm-dev:amd64 \
libvulkan-dev:amd64 libxfixes-dev:amd64 pkg-config \
&& rm -rf /var/lib/apt/lists/*; \
elif [ "$TARGETARCH" = "arm64" ]; then \
dpkg --add-architecture arm64 && \
apt-get update && apt-get install -y --no-install-recommends \
crossbuild-essential-arm64 \
libwayland-dev:arm64 libx11-dev:arm64 libx11-xcb-dev:arm64 \
libxkbcommon-x11-dev:arm64 libgles2-mesa-dev:arm64 libegl1-mesa-dev:arm64 \
libffi-dev:arm64 libxcursor-dev:arm64 libxrandr-dev:arm64 \
libxinerama-dev:arm64 libxi-dev:arm64 libxxf86vm-dev:arm64 \
libvulkan-dev:arm64 libxfixes-dev:arm64 pkg-config \
&& rm -rf /var/lib/apt/lists/*; \
fi
# Build and copy to a fixed path so the COPY step below is always the same.
RUN NATIVE=$(uname -m | sed 's/x86_64/amd64/;s/aarch64/arm64/') && \
# Build caire and stage to /tmp/caire (stable path for the COPY below).
# Cross-compiled CGO binaries land in $GOPATH/bin/${GOOS}_${GOARCH}/ not $GOPATH/bin/.
RUN set -e; \
NATIVE=$(uname -m | sed 's/x86_64/amd64/;s/aarch64/arm64/'); \
if [ "$TARGETARCH" = "$NATIVE" ]; then \
go install github.com/esimov/caire/cmd/caire@v1.5.0 && \
cp /go/bin/caire /tmp/caire; \
else \
CGO_ENABLED=0 GOOS=$TARGETOS GOARCH=$TARGETARCH \
elif [ "$TARGETARCH" = "amd64" ]; then \
CC=x86_64-linux-gnu-gcc \
PKG_CONFIG_LIBDIR=/usr/lib/x86_64-linux-gnu/pkgconfig:/usr/share/pkgconfig \
CGO_ENABLED=1 GOOS=$TARGETOS GOARCH=$TARGETARCH \
go install github.com/esimov/caire/cmd/caire@v1.5.0 && \
cp /go/bin/${TARGETOS}_${TARGETARCH}/caire /tmp/caire; \
elif [ "$TARGETARCH" = "arm64" ]; then \
CC=aarch64-linux-gnu-gcc \
PKG_CONFIG_LIBDIR=/usr/lib/aarch64-linux-gnu/pkgconfig:/usr/share/pkgconfig \
CGO_ENABLED=1 GOOS=$TARGETOS GOARCH=$TARGETARCH \
go install github.com/esimov/caire/cmd/caire@v1.5.0 && \
cp /go/bin/${TARGETOS}_${TARGETARCH}/caire /tmp/caire; \
fi