# Cross-compile for x86_64 Linux using an x86_64 builder (emulated via QEMU on ARM hosts)
FROM --platform=linux/amd64 rust:1.86-slim AS builder

RUN apt-get update && apt-get install -y --no-install-recommends \
    musl-tools \
    && rustup target add x86_64-unknown-linux-musl \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /build
COPY Cargo.toml Cargo.lock ./
COPY src/ src/

RUN cargo build --release --target x86_64-unknown-linux-musl

# Extract the binary
FROM scratch AS export
COPY --from=builder /build/target/x86_64-unknown-linux-musl/release/btest /btest