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+# Cross-compile the arm64 binaries on an amd64 host. The runtime image is
+# assembled later on the target host from the produced binaries.
+FROM debian:bookworm
+RUN dpkg --add-architecture arm64 \
+ && apt-get update \
+ && apt-get install -y --no-install-recommends \
+ make ca-certificates gcc-aarch64-linux-gnu \
+ libncurses-dev:arm64 libssl-dev:arm64 \
+ && rm -rf /var/lib/apt/lists/*
+COPY cross-build.sh /usr/local/bin/cross-build
+RUN chmod 0755 /usr/local/bin/cross-build
+ENTRYPOINT ["/usr/local/bin/cross-build"]