fix: use Alpine with native musl for arm64 Docker builds

This commit is contained in:
Nathan Flurry 2026-01-28 01:59:35 -08:00
parent e887b48e26
commit d7f32f3ee5

View file

@ -1,13 +1,14 @@
# syntax=docker/dockerfile:1.10.0 # syntax=docker/dockerfile:1.10.0
# Build stage - compile the binary
FROM rust:1.88.0 AS builder
ARG TARGETARCH ARG TARGETARCH
# ============================================================================
# AMD64 Builder - Uses cross-tools musl toolchain
# ============================================================================
FROM rust:1.88.0 AS builder-amd64
ENV DEBIAN_FRONTEND=noninteractive ENV DEBIAN_FRONTEND=noninteractive
# Install dependencies (g++-multilib not available on arm64)
RUN apt-get update && apt-get install -y \ RUN apt-get update && apt-get install -y \
musl-tools \ musl-tools \
musl-dev \ musl-dev \
@ -18,72 +19,89 @@ RUN apt-get update && apt-get install -y \
pkg-config \ pkg-config \
ca-certificates \ ca-certificates \
g++ \ g++ \
g++-multilib \
git \ git \
curl \ curl \
wget && \ wget && \
rm -rf /var/lib/apt/lists/* rm -rf /var/lib/apt/lists/*
# Install musl cross toolchain for amd64 only # Download cross-tools musl toolchain
# On arm64, we build natively using musl-gcc from musl-tools (already installed) RUN wget -q https://github.com/cross-tools/musl-cross/releases/latest/download/x86_64-unknown-linux-musl.tar.xz && \
RUN if [ "$TARGETARCH" = "amd64" ]; then \ tar -xf x86_64-unknown-linux-musl.tar.xz -C /opt/ && \
wget -q https://github.com/cross-tools/musl-cross/releases/latest/download/x86_64-unknown-linux-musl.tar.xz && \ rm x86_64-unknown-linux-musl.tar.xz && \
tar -xf x86_64-unknown-linux-musl.tar.xz -C /opt/ && \ rustup target add x86_64-unknown-linux-musl
rm x86_64-unknown-linux-musl.tar.xz && \
rustup target add x86_64-unknown-linux-musl; \
elif [ "$TARGETARCH" = "arm64" ]; then \
rustup target add aarch64-unknown-linux-musl; \
fi
# Set environment variables based on architecture ENV PATH="/opt/x86_64-unknown-linux-musl/bin:$PATH" \
ENV LIBCLANG_PATH=/usr/lib/llvm-14/lib \ LIBCLANG_PATH=/usr/lib/llvm-14/lib \
CLANG_PATH=/usr/bin/clang-14 \ CLANG_PATH=/usr/bin/clang-14 \
CC_x86_64_unknown_linux_musl=x86_64-unknown-linux-musl-gcc \
CXX_x86_64_unknown_linux_musl=x86_64-unknown-linux-musl-g++ \
AR_x86_64_unknown_linux_musl=x86_64-unknown-linux-musl-ar \
CARGO_TARGET_X86_64_UNKNOWN_LINUX_MUSL_LINKER=x86_64-unknown-linux-musl-gcc \
CARGO_INCREMENTAL=0 \ CARGO_INCREMENTAL=0 \
CARGO_NET_GIT_FETCH_WITH_CLI=true CARGO_NET_GIT_FETCH_WITH_CLI=true
# Build OpenSSL for musl target (amd64 only - arm64 uses rustls) # Build OpenSSL for musl
ENV SSL_VER=1.1.1w ENV SSL_VER=1.1.1w
RUN if [ "$TARGETARCH" = "amd64" ]; then \ RUN wget https://www.openssl.org/source/openssl-$SSL_VER.tar.gz && \
export PATH="/opt/x86_64-unknown-linux-musl/bin:$PATH" && \ tar -xzf openssl-$SSL_VER.tar.gz && \
wget https://www.openssl.org/source/openssl-$SSL_VER.tar.gz && \ cd openssl-$SSL_VER && \
tar -xzf openssl-$SSL_VER.tar.gz && \ ./Configure no-shared no-async --prefix=/musl --openssldir=/musl/ssl linux-x86_64 && \
cd openssl-$SSL_VER && \ make -j$(nproc) && \
./Configure no-shared no-async --prefix=/musl --openssldir=/musl/ssl linux-x86_64 && \ make install_sw && \
make -j$(nproc) && \ cd .. && \
make install_sw && \ rm -rf openssl-$SSL_VER*
cd .. && \
rm -rf openssl-$SSL_VER*; \
fi
# Set OpenSSL environment variables (only used on amd64)
ENV OPENSSL_DIR=/musl \ ENV OPENSSL_DIR=/musl \
OPENSSL_INCLUDE_DIR=/musl/include \ OPENSSL_INCLUDE_DIR=/musl/include \
OPENSSL_LIB_DIR=/musl/lib \ OPENSSL_LIB_DIR=/musl/lib \
PKG_CONFIG_ALLOW_CROSS=1 PKG_CONFIG_ALLOW_CROSS=1 \
RUSTFLAGS="-C target-feature=+crt-static -C link-arg=-static-libgcc"
WORKDIR /build WORKDIR /build
COPY . . COPY . .
# Build static binary based on architecture
RUN --mount=type=cache,target=/usr/local/cargo/registry \ RUN --mount=type=cache,target=/usr/local/cargo/registry \
--mount=type=cache,target=/usr/local/cargo/git \ --mount=type=cache,target=/usr/local/cargo/git \
--mount=type=cache,target=/build/target \ --mount=type=cache,target=/build/target \
if [ "$TARGETARCH" = "amd64" ]; then \ SANDBOX_AGENT_SKIP_INSPECTOR=1 cargo build -p sandbox-agent --release --target x86_64-unknown-linux-musl && \
export PATH="/opt/x86_64-unknown-linux-musl/bin:$PATH" && \ cp target/x86_64-unknown-linux-musl/release/sandbox-agent /sandbox-agent
export CC_x86_64_unknown_linux_musl=x86_64-unknown-linux-musl-gcc && \
export CXX_x86_64_unknown_linux_musl=x86_64-unknown-linux-musl-g++ && \ # ============================================================================
export AR_x86_64_unknown_linux_musl=x86_64-unknown-linux-musl-ar && \ # ARM64 Builder - Uses Alpine with native musl
export CARGO_TARGET_X86_64_UNKNOWN_LINUX_MUSL_LINKER=x86_64-unknown-linux-musl-gcc && \ # ============================================================================
export RUSTFLAGS="-C target-feature=+crt-static -C link-arg=-static-libgcc" && \ FROM rust:1.88-alpine AS builder-arm64
SANDBOX_AGENT_SKIP_INSPECTOR=1 cargo build -p sandbox-agent --release --target x86_64-unknown-linux-musl && \
cp target/x86_64-unknown-linux-musl/release/sandbox-agent /sandbox-agent; \ RUN apk add --no-cache \
elif [ "$TARGETARCH" = "arm64" ]; then \ musl-dev \
export CC_aarch64_unknown_linux_musl=musl-gcc && \ clang \
export AR_aarch64_unknown_linux_musl=ar && \ llvm-dev \
export CARGO_TARGET_AARCH64_UNKNOWN_LINUX_MUSL_LINKER=musl-gcc && \ openssl-dev \
export RUSTFLAGS="-C target-feature=+crt-static" && \ openssl-libs-static \
SANDBOX_AGENT_SKIP_INSPECTOR=1 cargo build -p sandbox-agent --release --target aarch64-unknown-linux-musl && \ pkgconfig \
cp target/aarch64-unknown-linux-musl/release/sandbox-agent /sandbox-agent; \ git \
fi curl \
build-base
RUN rustup target add aarch64-unknown-linux-musl
ENV CARGO_INCREMENTAL=0 \
CARGO_NET_GIT_FETCH_WITH_CLI=true \
RUSTFLAGS="-C target-feature=+crt-static"
WORKDIR /build
COPY . .
RUN --mount=type=cache,target=/usr/local/cargo/registry \
--mount=type=cache,target=/usr/local/cargo/git \
--mount=type=cache,target=/build/target \
SANDBOX_AGENT_SKIP_INSPECTOR=1 cargo build -p sandbox-agent --release --target aarch64-unknown-linux-musl && \
cp target/aarch64-unknown-linux-musl/release/sandbox-agent /sandbox-agent
# ============================================================================
# Select the appropriate builder based on target architecture
# ============================================================================
FROM builder-${TARGETARCH} AS builder
# Runtime stage - minimal image # Runtime stage - minimal image
FROM debian:bookworm-slim FROM debian:bookworm-slim